CRPS definitely has it's roller coaster days. There are times where you don't think you can stand one more minute of it. Emotional stress just makes our pain worse.
Ask your PM doctor to refer you to a pain psychologist. They can be very helpful and can teach you relaxation techniques as well as give you someone to talk to.
Living in a toxic environment is not good for you or your daughter. Get on the Internet and search for state and local agencies that may be able to help you get housing. Don't worry about the packing, etc. take one step at a time and get the housing first. Call every agency you find and eventually you will find someone to help you. If you have a local free or public healthcare clinic near you they often have social workers on staff that can assist with housing. Even your daughters school guidance counselor may have resources. Don't be afraid or embarrassed to ask for help. Your health and your daughter come first. There is no shame in leaving a caustic relationship.
Have you applied for disability? It's a long process and most of the time you get rejected the first time around. If you can't work for the foreseeable future then apply. Also see what kind of welfare benefits/food stamps etc you may be qualify for. Just call those agencies- don't assume you won't qualify. If you have called before, call again you never know.
I know what that CRPS black hole of hopeless feels like. You have to take control of your life and advocate for yourself. Don't let someone else's issues intensify your suffering.

and deep breaths,
gigi