reincarnation?

i have a younger cousin, around 4 years old, and she was having a very serious conversation with me and my mom earlier about her "first mommy and daddy". she told us that her mom was either from or named Kelowna, that she also might have had a sister, and that her "first" dad was incredibly violent and would break things in her room and hurt her. my cousin being young aswell as coming from an incredibly privileged family, there is no way i can possibly think of that she could even make this stuff up. there was lots of things she shared that sounded like physical and sexual abuse, buth of which she doesnt even know about at her age. she also described how after her first father broke too many things, she went into her current mothers body and was born with her new parents. 

idk i think its interesting how things like that work