Hi! My daughter has extrememly sensitive ears to noise as well. There is sometimes i can barely hear the things she is saying is too loud. I just took her to an Ent and audiologist to see if there is anything to be done and they said really nothing besides ear plugs and ear defenders. So I had her fitted for swim earplugs, like kids with tubes use. And went to sporting good store and got some ear defenders (like people wear at a shooting range). Those thing brought the level down so well she can go to the movies and we even went to Disney over spring break! Now she is a teen and it does look a little silly to wear ear defenders to the movies and what not, but she is thrilled to be able to go and not add to her pain because of the noise so she thinks it is worth it. She has even worn them in school from time to time.
Hope his helps!