Another option that I think should be mentioned as the parent of a 3.5 year-old is whether you are sure it actually does hurt... I am not saying she is lying. I am just pointing out that this is an age where lying to get a desired result is developmentally appropriate. If you are reacting with a great deal of attention, it is possible that she may not actually be hurt but missing your attention at the moment...
I am also keenly aware that sensory issues are very real. We have them here too. Good luck!
