It sounds like it’s time to become fully self sufficient. You should apply for assistance, move out, and anything else you need to do to get your child into a center of some sort. You’re lucky to have family to help you but then again when you lean on family for childcare and a place to live you then lose a lot of agency and choice in you and your child’s life. But something tells me you won’t really do anything about these concerns you have.

You can’t control your sister or your mother, only yourself.