Do they have somewhere for people with disabilities to go to in order to report abuse by your employer where you live? Something like a disability advocate or something similar that you can contact and they take up your case and help you. If so, I would report her. She is little more than a bully who needs to be put in her place.

Perhaps somebody else here more knowledgeable on this subject can advise you further. I figured that I should have brought it up since nobody else did and I'm all about practical advice.

If all else fails, there is also the option of luring her into an alley or something off shift and kneecapping her with a hammer or attacking her pressure points in an area of her body that bruises can be easily concealed like her torso and threatening to hurt her further if she tells anybody. Of course, I'm not advising you to do some of this but that's what I would do in your shoes if I couldn't get a disability advocate to help me or help from within the company like others suggested. Sometimes, might does make right and all a bully like her understands is might because she has proven to be a brute that can't be reasoned with.

Do whatever you must to take care of yourself. You shouldn't have to quit a job that you enjoy over another person. Stand up for yourself no matter what. If doing so gets you fired, than at least you won't have to deal with her making you miserable anymore.