Ok well, first of all, everything you say you think she's holding a grudge against you for makes no sense to anger someone over.. like it's nothing and seems meaningless; but accepting for the sake of argument that she IS in fact "holding a grudge against you for saying she looks normal" or "thinking you're gossiping about her" -

English/AP english and "having it or not having it" is not going to make or break you academic life - basically nothing in high school is. You say you're from a family of immigrants and this basically puts you at the front of the line for academic scholarships, entry to higher end universities, funding, etc. You shouldn't put so much stress on yourself over this because you will be fine either way as long as you put in enough of an effort to pass in high school and try to maybe have some extra-curricular activities to list on college applications.

I hope you find a way to get over this in yourself personally - like not worrying so much about it. You can deal with it until you collect enough "evidence" to show the counselor again - the counselors in schools are there to help you - if you go to him or her and tell her all the stuff you just told us(make sure to include that she is hurting your mental/emotional health and you go to the bathroom after her class to cry because you feel so sad about it and you don't understand why she's doing this to you - and make sure to include that you don't feel this way about any of your other teachers so that they know you aren't just being an overly dramatic teenager girl or a paranoid teenager trying to blame someone else for your "bad marks"), they should help you and transfer you out of her class. They have apparently already done this for other children, so why not you too?

Tell the counselor what you told us about your parents, they are immigrants and they think "being hard on you" is the best way to be as parents, so you can't look to them for help and you are basically on your own - unless your counselor would be willing to call them and speak on your behalf in support of what you feel. Ask the counselor if they would call and explain that you would probably be better off and do much better grade-wise in someone else's class where you are not suffering from so much stress and worry emotionally on a personal level because you are fearing how the teacher is treating you or seeing you.

It is hard for you now but it's really that simple. In the end, if nothing changes, just do your best and keep a record of her being outright unfair to you or dishonest with you about your work or her instructions/"changing the goalposts" on assignments she gives you, stuff like that.