As long as she is 40" she can do most everything in Universal except Men in Black. At IoA there are more restrictions (my son was 40" last April). She can do Pteranadon Flyers, Spiderman, and the teacup type ride. Of course there are things without height restrictions, but she won't be able to do the Popeye barge ride, Dudley, Jurrasic Park and of course the big coasters. There is a small coaster in each park and she would be tall enough for that. You'll have to decide what is too scary. My son thought Spiderman was scary at 3yo, but when he was younger (and not tall enough to go on it) I bet he would have loved it. I'm bringing him in a couple of weeks and I'm hoping he does better with scary type stuff. Funny thing is that he wasn 't scared at all on Halloween and went into my neighbors spooky hanunted garage without me. There's no making sense of little kids.
T&B