What a horrible experience

. You needed to be cared for, not accused of being on drugs. I'm glad your mom yelled and made them help you!
I have heard yes that pupils can get dilated in mania. Also you could have had intense anxiety, loss of blood, anemia - all could also cause dilated pupils.
And yes I think if an abortion is emotionally hard experience it could certainly trigger an episode. I said "if" because I'm pro-choice and sometimes they go smoothly. I've had a traumatic one when I was a teen, and I had one that went fine at age 30, I already had 3 kids with absent fathers and was just so relieved for the option, and it was a non surgical. This one you went through sounds intense and traumatic. I'm so sorry. You should not have been treated like that.