My son is High Functioning Autistic. He was really easy, stayed in Special Needs classes until he graduated HS...nothing though, compared to what you are going through. I would suggest getting the IEP because its such a long process and could delay school options if it isn't at hand.

I wanted to jump in here and send you and your daughter peace and strength. I'm in awe of how you are holding it together during what must be an absolutely terrifying period of not knowing what's happening.