My sponsor tried to implement conversation therapy. I now struggle with anxiety. And she calls my attraction to women particularly and older one as mental illness. I’m not fully out yet. My family knows but they punish me for it. I would like to reveal my sponsors true colors
Anyone can sue for anything, so yes. Whether or not you'll win is an entirely separate matter which can't be predicted. The court system has unexpected rulings all the time.
Sounds like extremely unethical conduct on your sponsor's part. It must have been a very painful experience. I have no idea why they let people this bigoted and hateful act as sponsors to anyone... I don't know the laws where you live, so I don't know if you can sue, but one thing you can definitely do is file a complaint with whatever organization the sponsor works with. If possible, record conversations with him/her as tangible proof. Good luck and take care.