Sometimes therapists will take on a few clients without charge. Like anything else it would be important to ask the right questions to make sure you are in the right hands. Some of our members have talked about finding excellent therapists, maybe they might read this and offer some advise how they found them. I know I could have used some of their excellent advise because I got sucked down a rat hole.
I was involved with a group for depression so don't know about abuse groups, frankly I found it more depressing. I liked the other members a lot but found it drained my energy and zapped away my energy of hope to get out of the hole.
You might see if there is an abused woman's shelter in your area who could offer some support, members over the years have found support there.
I hope we can help you also, there is plenty of room here to talk here and we can validate what you are going through.
The best help I found was an excellent Zen teacher who taught me how to get back to my center when my mind felt like it was spinning my head off with the thoughts of what a horrible situation I found myself in. It is a work in progress. In the Resource Section I have a list of some of the books this teacher has published that I found very helpful. Books to Heal