This must be very painful for you. I get triggered just thinking about my family.

Therapy would work better if you're away from them, but if you're with them it can be a good support for you until you can get safer living arrangements.

The feelings you have towards your T could be transference. All the stuff you feel for your family is getting transferred on to the T, i.e. not feeling safe. Talk to your T about this. If you have a good T you can get back to feeling safe again.