So hang in there. Take part in any DV group you can. It's great you're sharing here. You need to get it out.
Post Traumatic Stress can improve with time, but you may need individual counseling and maybe medication at some point.
For now, write down or type everything you can remember. Make up NEW ENDINGS to your stories if you can. You're in a dark place now so it's hard to help yourself.
You need to ask for help and stop trying to be strong for others. It's time to accept the weakness caused by stress and injury.
The goak is to be strong again, but a different kind of strong, one that's supported by others! Meanwhile, let yourself be what you need to be. Accept where you are.
I'm betting on you because you have many strengths already.