I just wanted to share in your frustration with posting. For some reason the site sometimes randomly logs me off - usually I can use my browser's back arrow to return to the post, then save it and sign back in. I don't know why the site does this sometimes - it's something new and annoying. I find just writing it out can be cathartic, so you probably did yourself some good just by typing it.
You don't need to tag your threads unless you want to, they are only for search purposes.
Welcome to the site, and sorry for the reason you are here. I hope you will find clarity and support and find a way out of her imposed reign of terror. You don't have to live this way.