I don't have a lot of useful advice, but I do have a *lot* of hugs.

I would suggest trying to detangle your parents from your necessary life (financial, car) as much as possible in the upcoming time, so that if you have to make a clean break, you can.

I'd also suggest keeping hold of that found family, like the sister you recently ritualized. The blood of the covenent is thicker than the water of the womb. There are people who love you and accept you and know your glory (myself included) and they are who you should hold to.