Wow, I came on here hoping to help or offer advice. But I see everything has been covered!
The only other thing I can add, is when you look at the ride vehicle, just make sure you will be able to get her out of the ride vehicle well as getting in.
My DH will try anything! So we've managed to get ourselves in some pretty tight spots. We'll get him on, he'll ride & have a blast, but then we'll have serious problems getting him out. Test Track is one that was really tough!
He can manage EE & Soarin pretty easily. We can also get him on TOT if he transfers to a manual chair first. We've given up on Pirates & Splash Mountain, as I said we can get him in but it's too deep to manage a safe lift out.
Good Luck & hope you have a great trip!