I completely understand your frustration/disappointment. The $24,000 difference is a LOT of money.
My son had been talking about going to UA since around the middle of freshman year. Now that his turn has come to apply, we were holding our breaths UA wouldn’t change the merit requirements again. Being OOS, he/we needed the scholarship money for UA to have remained an option. Fortunately merit for a 30 ACT remained the same. He would have been really disappointed if it didn’t.
I wish your daughter (and all of the other incoming class) much success at UA!