what could be wrong with my daughter?

My daughter (2 years old, 25 lbs, very mild CP, gastroparesis, history of tear duct stenting)

started complaining about eye pain about two weeks ago. She would wake up in the middle of the night and in the morning, screaming, saying ow ow, pointing to her eye. She has never done this before, so we are inclined to believe her. Every single time she has woken up since she’s been screaming in pain either at pointing somewhere on her head always on the right side.

Recently, she started screaming and grabbing at her hair, almost ripping it out

She had her first seizure Saturday night. She got put on Keppra and hasn’t had one since that we’ve noticed.

I took her to the ER last night and they did a head CT and that came back normal and they just sent us home

I attempted to tell her that her foot hurt in order to see if she was just saying ow, she would always redirect everything back to the right side of her head

She’s not teething, no problems with ears, sinuses, nose, any of those things.

Please give me some helper advice because I’m really at a loss and I’m really sad seeing her in pain