She does not sound mentally capable of nurturing a child. If I were you, I'd leverage my stable income job and stable background to try go get custody. You can

She does not sound mentally capable of nurturing a child. If I were you, I'd leverage my stable income job and stable background to try go get custody. You can still allow her to live with your child, but it is important that you are the one making important decisions about your child's upbringing, and to keep her safe. Talk to a lawyer.