The fact that you have a teenage daughter means you are not child anymore. Why exactly does your family insist that you live with your mom? Is it because she needs live in care and they want a free live in nurse? Is it because in the past you have demonstrated a lack of ability to function as an independent adult? Or?........just curious.

What does it mean that your family will “disown” you? Does it mean they will attempt to punish you by shunning you? Do you mean disowned as in cut of an inheritance or something like that? They do sound a bit manipulative and controlling.

In the end it is your decision to move out and you have every right to do so.