I am an OT student at UIC right now. I was also going to suggest the Lighthouse, as Sharon did.
Your school system may also have some suggestions, even though she is 4 and not yet in the system. Head Start programs as well as your local hospital.
I am glad that you are looking for an OT. A good one will definitely help evaluate your daughter, but after the initial evaluation any will need a doctor's script to continue. So an OT is a great first step, then future steps together.
Whatever you do, get more than one opinion. It could even be a nutritional situation, such as a zinc deficiency, contributing to her sensitivity.
If you get stuck, email me and I can email one of my professors who are all active in the community for possible references. I'm going to bet Sharon's suggestions work for you, but just in case, I'm at--