Rebecca Dennis was Sam Walker's biological mother who gave her up for adoption although she instead went into the foster care where she was eventually fostered by Brooke Davis and while she was living with Brooke, Rebecca got back in contact with her daughter and Sam eventually moved in with her mother.
During her time in high school Rebecca fell pregnant. She decided to keep her child but her parents convinced her to put the baby up for adoption. Rebecca gave birth to a daughter named Samantha.
Rebecca takes the decision to see her daughter who is now the fashion desinger Brooke Davis' foster daughter. She write a letter to Sam but the letter is found by Brooke's mother. To protect Brooke and Sam; Victoria tries to destroy the letter but she is interrupted by Brooke. Brooke asks to see the paper and later gives it to Sam. First Sam refuses to read the letter but Brooke persuades. Then Rebecca meets Sam for the first time. They both spend time together and are watched by both Brooke and Victoria. Victoria wants make a folder against Rebecca but Brooke doesn't even know if she wants to legally adopt Sam. When Brooke speaks with Sam about the possible adoption Sam accepts but is worried about not seeing her birth mother again, Brooke reassures her, saying her that she can still see Rebecca. But later Sam tells to Brooke that she wants live with Rebecca. Sam and Brooke have a heart to heart and Sam tells Brooke that she will always be her first mom.
Sam moved in with Rebecca, leaving Brooke heart-broken.
Rebecca is Samantha Walker's birth mother, she gave her daughter up for adoption shortly after her birth but almost 16 years later she decided she wants contact with Sam. Both girls spend time together and get close. Later Sam moved in with Rebecca. Despite being her biological mother Sam classes her as her second mom and her first being Brooke Davis.
In her Teens years she dated with an unknown boy whose she had a baby girl.
Rebecca is waitress in a café. According to Victoria she has a little salary.
- She isn't considered by her biological daughter as her first mother.
- She has a little house with a white picket fence.