Have you talked calmly with her to find out if she has possibly been teased or even bullied due to having an IEP? Other kids quickly figure out which kids are getting special services and last year she might have been the butt of jokes or teasing because of getting these services. That could explain why she is so angry and resistant.
It also sounds like she needs a third party -- not you -- to talk with her about WHY these services will help her get through high school and why she needs them to get beyond high school (whether or not she goes to college). She is not going to listen to you at this point; enlist the person at her school who is charge of her IEP, or the OT therapist, or the speech therapist - whichever one she seemed to get along best with when she WAS going. I would frankly go see these professionals in person and alone, without daughter, first, and I would ask them to ask to see her but NOT to tell her that you are behind their requests. If she realizes mom asked them to talk to her she may just become defensive and resistant.
I am very surprised that these professionals have not come after her, and you, already with offers of meetings, letters of concern, etc. Has there been no contact at all from the school along the lines of "your child did not turn up for this session today"?? That would be very disturbing to me. Have you previously ever gone to the school and demanded to know why it isn't sending her to these in-school services? Are these services supposed to take place during school hours, at school, yet she's not going? If that's the case -- why is someone not hauling her to her assigned location for services? If it's outside school -- how can she refuse to go, if you are driving her there and walking her in? It's not clear to me how she has been able to refuse.
You say you've taken her to outside counseling and it didn't help. You need a different counselor. Don't give up on her but find her a counselor who has a LOT of experience with girls her age. Also consider family counseling for both of you together so she learns that you have her best interests at heart and you learn how to talk with her rather than talking at her.
She is two years away from graduation. If she wants to do anything at all after high school she needs to learn that she must get herself together starting now. But she needs help beyond you. Fight to get her a better counselor outside school, take her there yourself, and fiind out why the school has been so slack that it has let her go a YEAR without services. But most of all, talk to her instead of just ordering her to do things. Giving her a little bit of power over her life may do a lot to reduce her resistance to you.