LPT Request: I'm in a terrible situation with my boss and need advice on what to do.

I've been at my current job now for almost a year. It's a pretty boring remote job dealing with contracts, but the pay is pretty good.

The problem is my manager is crazy, and that may be an understatement. I honestly believe she has some type condition that's either undiagnosed or not properly medicated. She lashes out at my coworker and I in front of other people and I've also seen her do it to others. In her eyes nothing I do is right, and no matter what we send her she always makes some kind of "correction" and then submits it as her own work.

I was so concerned I brought the issue to our HR department, and found out later that my coworker did the same. There has been no follow up from them in the months since. I then expressed my concerns to her supervisor who told me to let her know if the situation didn't improve.

Several weeks passed and not only did it not get better, it got worse. I went back to let her boss know and she told me she would have to confront her with this despite the fact I disclosed my fear of retaliation.

Fast forward to now and not only does my boss know I went to her boss and to HR but she's obviously starting to try and change the narrative to look as if I'm not up to the job.

I don't want to start over at another job and I get paid a decent wage

Please let me know what you would do in this situation.