"Well, we don't know yet since Alice can't see that part of the future, but we won't know unless we turn the next page and it writes out how it happens next."
- ―Maureen
Maureen Lambert Grant (previously Snow) is a doctor and is the mother of Luna and Korrina Snow. She is the second wife of Calvin Grant and the stepmother of Damien Grant. Maureen is also the mother-in-law of Lucien Summers and Evan Black and the stepmother-in-law of Sarah Black. She was previously married to Noland Snow before he passed away.
She is portrayed by Danielle Fishel.
Biography
Early life
Born as Maureen Lambert in Salem, Oregon was raised by her aunt after parents had a divorce and she felt uncomfortable living with either one of them. She graduated from medical school as a doctor. Sometime before that, Maureen met Noland Snow where they later got married and have two daughters; Luna and Korrina Snow. Her mother attended the wedding. Things started to go rough with Maureen as Luna was being bullied by one of her classmates, Patrick Devine, making her a loner at school and Noland passed away due to Leukemia making Maureen a widow. Although Maureen was devastated for her loss, she remained strong for her daughters.
Long Live Life

Maureen soon was offered a position at hospital in Minneapolis, Minnesota and she accepted it resulting her to move the family there. The other reason why she accepted the job is because she wants to start over her family’s new life. She and her family move into Minnesota and began working at the hospital where she meets Carlisle Cullen and Calvin Grant, who Maureen falls for and vice versa.
During work, Maureen rushes in to see Luna in the hospital bed due to being beaten by Brittany McKay for ‘taking Lucien Summers’ from her and locks Luna in a janitor’s closet until she was found by Lucien. There, Lucien and Luna confessed their feelings for each other. Seeing the change in Luna made Maureen happy to see her daughter this way which is why is very welcoming to Lucien.
Maureen celebrates Luna’s sixteenth birthday where she gives Luna her own car. The Cullens threw a party for Luna where Maureen and Korrina were invited to attend. There, Maureen comes in when she hears a commotion from the Cullen siblings where the Cullens told Maureen and Korrina that they are vampires and that Evan Black, a shape shifter, imprinted on Korrina. Normally, the existence of vampires must be kept a secret but because the Cullens are the new Volturi, the Cullens allowed Maureen and Korrina to know about it when Luna already has since they are her family. Unlike Korrina, who is fascinated of the supernatural, Maureen nearly faints and does her best to adjust knowing about it.

Maureen now knowing about the supernatural.
When Luna, Lucien and Damien Grant, Calvin’s son, come home to Luna’s house to see Maureen and Calvin kissing. The two of them revealed to their kids that she and Calvin have been dating a week since she started working at the hospital and didn’t want to say anything until their kids got along which they already has and the kids accepted their relationship.
Maureen comes to Luna’s school to pick her up when Luna faints from Patrick, who transfer to her school, confesses that the reason why he’s been picking on Luna is because he loves her and wants Luna to choose him over Lucien. Maureen reveals to Luna that she knew about Patrick’s actions from his mother. Maureen went to work to fill in for her co-worker leaving Luna along where she was attacked by a half-human half-vampire hybrid named Skai who was Lucien's best friend and has come for revenge on him by killing Luna so that Lucien can suffer the same way he has for losing Kourtney Collier, a human Skai has feelings for, and then kill Lucien. He's been using a sword known as IL Mietitore Capacità to create an army of metal vampires with gifts, dead and alive at his control. Feeling that Korrina and Maureen are in danger since they now know about the supernatural and being linked with Luna, the Cullens sent them along with Damien and Calvin to the Red Lake reservation where they stay at the Walkers while being protected by the Black pack while the Cullens try to stop Skai after sending Lucien and Luna away with Sarah and Evan. Thankfully in the end, Skai and the IL Mietitore Capacità have been destroyed by the Cullens however Luna was badly injured and was about to die until Lucien changed her into a vampire after being granted permission from Evan as the Alpha of the pack.
A few months later, Calvin marries Maureen becoming Damien’s stepmother. A year later, Damien was in a car chase by Owen Decker and his friends and was t-boned by him. Owen was about to shoot Damien to kill him until he was stopped by the Cullens. However Damien was dying until Evan changes him into a vampire and joined the Cullens as part of their coven. Three years later, Luna and Lucien propose to each other and later got married making Lucien her son-in-law. The two of them went to college in Washington along with Sarah and Damien. During that, Sarah and Damien got married in the middle of their college years with Maureen having Sarah as her stepdaughter-in-law.
Four years later, Korrina attends high school with the Cullens and she gets strangled to death by Randy Fowler, who she once dated, until the Cullens stopped him and came to Korrina's aid. Evan changes Korrina when she was about to die and she becomes a vampire later getting married to Evan who became Maureen’s son-in-law.
Physical appearance

Maureen has dark red hair and violet eyes, that trait being passed down to Luna, standing at five feet and four inches.
Personality and traits
According Luna, Maureen is the best doctor the hospital has. Maureen is a strong will woman as seen as she does her best to move forward after the lost of her husband. She is a kind person who is very welcoming to other people such as accepting Lucien into the family when he started dating Luna.
Relationships
Maureen is the second wife of Calvin Grant. She was previously married to Noland Snow. She is also the mother of Luna and Korrina Snow and stepmother of Damien Grant as well as the mother-in-law of Lucien Summers and Evan Black and the stepmother-in-law of Sarah Black.
Calvin Grant

Maureen's husband: Calvin Grant.
Calvin Grant is Maureen’s second husband.
The two of them work in the hospital in Minnesota where they met and fall in love with each other on Maureen’s first day. Like Maureen, Calvin lost his spouse years ago. Even though they love each other, both felt concerned about how their kids will react if they date but find it hard to control their feelings for each other so they kept their relationship quiet until their kids got along with each other. However, the two were caught kissing by their kiss revealing the news to which the kids accept.
A year later, Calvin proposes to Maureen and the two later got married.
Luna Snow

Maureen's daughter: Luna Snow.
Luna Snow is Maureen’s oldest daughter.
Luna is close to her mother. She's always open to Maureen on anything, especially when she was being bullied by Patrick. When Maureen was offered a position at the hospital in Minnesota, her main reason for her and Luna is to start over their lives. She shows to care about Luna's safety when she was in danger from Skai as Luna shows worry when she was away.
When Maureen sees the change in Luna when meeting Lucien, she encourages Luna to give things a try with him. Seeing Luna with Lucien made Maureen happy as she welcomed Lucien with open arms. Luna was about to tell Maureen about the Cullens being vampires and the supernatural until on Luna's birthday, Evan imprints on Korrina and because of it, since the Cullens are the new Volturi, Maureen was brought into the supernatural stating it will take a lot of getting use to. Despite this, she supports Luna and Lucien's relationship, especially when they got married right after high school.
Lucien Summers

Maureen's son-in-law: Lucien Summers.
Lucien Summers is Maureen’s son-in-law.
Maureen accepted Lucien seeing the effect he made on Luna who felt like an outsider her whole life and being insecure and welcomed him into her family. On Luna's birthday, Evan imprinted on Korrina bringing Maureen into the world of the supernatural. Luna states that Maureen is trying to get used to all of this meaning it's a lot for Maureen to handle.
After Luna graduated, Lucien proposed to Maureen making them engaged and later getting married making Maureen his mother-in-law.
Korrina Snow

Maureen's daughter: Korrina Snow.
Korrina Snow is Maureen’s youngest daughter.
Not much is shown how close Korrina is to her mother but the two do care about each other very much. The two of them were unaware about the supernatural when Luna started dating Lucien until Evan imprinted on Korrina at Luna's birthday party thus being told by the Cullens about it since they are the new Volturi. Unlike her mother who was overwhelmed about being brought into the supernatural, Korrina was thrilled due to her love for them.