so morgan has numerous half siblings from her dad and two more from her mother. if you go with the half sister on her dad's side, she'd be around 25/26. basically they all share the same shit-in-luck dad who's gone through women like water and collected a host of children along the way. because he's a trucker and always on the road though he really depended on their (shared paternal) grandma to take care of the siblings, but she's always been overworked so ultimately the siblings took care of one another. comes with other siblings in game.
if you go with her mother, she'd be around 21. basically they grew up in an southern uptight strict household where appearances were everything. morgan's mom considers her first marriage the biggest mistake of her life and took it out on morgan so she was harder on her than the other two kids. more often than not she dropped morgan off at her paternal grandmother. she and her second husband really pushed all of the kids to be good and be with the right people to the point where it was controlling. though it was under the guise of being good parents. morgan and her maternal side don't speak with the exception of a few people. their relationship is strained because of morgan's marriage. the siblings however are relatively close, but there's still tension because they might view their relationship with their mother a little differently.