I have problems with certain sounds...but not to the degree of your daughter...sorry. Unfortunately I haven't found much to help with this to prevent it from happening...just the same treatments I do for other flares AFTER it happens. The only thing that helps me somewhat is that I have an iPod with a playlist that helps (songs that don't cause flare up and drown out the bad sounds). If there are other sounds that work if music doesn't...then this could be an option (doesn't help much with socialization though if you have to have the buds in all the time...but would allow her to leave the house and just get out). I have to use ear buds for this to work though...just playing on a speaker doesn't help...not quite sure why?