Daughter suspended, may be expelled. I don't know what to do anymore

My daughter, almost 8, has had behavioral issues. She has ADHD, and is occasionally quite impulsive; however, she is on am IEP at school and she has been receiving behavioral accommodations and has been doing great this year. I was so happy when they told me in the last IEP meeting how happy they were with her behavior this year.

Recently, there have been a couple incidents, but nothing serious. They did call me the day before yesterday because she was overly tired and grumpy, but she calmed down. I responded by making her go to sleep earlier and she had a great day at school.

However this morning she woke up and complained she did not sleep well and woke up in the middle of the night multiple times. My gut told me that I should let her sleep more and bring her late, but I didn't want to be late to work so I dropped her off.

At 1:20 I got a call. I went to get her. She had ran from teachers and hit and kicked multiple teachers trying to get her. She then was brought to the dispensary office where she flipped over chairs and threw toys.

When I got there her face was red and she was basically growling at me, but she listened begrudgingly when I told her to sit down, listened to the summary of events and the dispensarian tell me she will be suspended at least a few days as they decide on holding an expultionary hearing.

I've never had issues like this nor anyone else in my family. She cried at home, she told me she didn't know all this would happen and she was angry because none of her friends would talk to her. I'm at a loss.

It's been so hard raising her. If they expell her I have no idea what I'm going to do. Has anyone gone through this?