The Adoption.

Storm Alexis Winters has a very messed up life. She's been in a adoption center since she was 8. One night her neighbors herd her crying to sleep and went to check on her while her parents were at a party. She told them her parents have been abusing her for years and they called the police and she's been in an adoption center ever since then.
When she gets adopted by the Addams, her whole life changes.

Warning:
This gets pretty dark pretty fast.