Your sister Lilith (she chose the name not mom) has always been a bit...odd

Well for one she is the reincarnation of the Demon Queen from another world

She is always rather silent and expressionless since she was a kid but like doing kid things like drawing

And after your mother died and you took guardianship she has been very clingy

"Let me make food"

She says as she summon demons and lucifer cookbook to cook food but she sort've cut through the kitchen counter with a knife by accident