I'm glad you got such good answers already. I have to agree that the shows are so visually rich that she will still get a lot out of most of them. Some especially good ones are:
MK: Legend of the Lion King
Buzz Lighyear
Winnie the Pooh
Small World
Epcot: Food Rocks in the Land (it's loud even without an assistive listening device).
Living Seas (you might want to skip the movie. It's dark and has sudden bursts of lightening that might scare her since you can't explain them to her).
AK: Festival of the Lion King (high energy tumbling, dancing and moving around going on all the time)
Pocohontas and her forest friends (cute with animals)
Tarzan Rocks! (people either like or absolutely hate this. There are roller bladers, gynastics and loud music. That's what a lot of people complain about, but it might be an advantage to you).
Flights of Wonder (there is a pert in the middle that's kind of slow where the hosts are interacting together doing a lot of talking. The rest is neat with a lot of birds that fly right over you)
Studio:Beauty and the Beast (there's a lot happening on the stage)
Hunchback (ditto)
Voyage of the Little Mermaid
Fantasmic (parts are scary where the villians are out, but a lot to see).
Here's a
link to the DIS inforamtion about services for guests with hearing disabilities.