I'm sorry you are in such a tough situation. The good news is there is a lot you can learn to help make things better. You can't change her, or make the situation perfect, but you can alter your reactions to things and take some healthy actions that will improve things. There's a lot to learn, and it takes practice to get it to work in real life. We'll try a new coping strategy, usually with mixed success, and we can come back to the board here and talk about how it went, get support and feedback, and see if we can improve the next time.
Take a look at this
Three-Minute Lesson on Ending Conflict. Do you see anything in that lesson that applies to your situation? One of the best strategies for a new member coming here with a high conflict situation is to learn how not to
“justify, argue, defend, or explain” (JADE). Take a look at that link and see if it describes any of the things that you sometimes do in a conflict. It takes effort and practice not to JADE but you'll get a huge return on your investment in conflict reduction.
Let us know your thoughts on that "ending conflict" lesson and JADE.
RC