I would suggest then that you make a statement about this bothering you and that they should be writing this down in your file. There isn't any reason why they shouldn't have it in there already, especially if they are aware of your mental health issues.

Just spit it out and tell them. You don't have to go through any details; just tell them that you need someone who is empathetic to someone who is suffering from PTSD, and that what they will do to you while visiting should be said in detail so you can at least prepare yourself for what they do. If you liked that particular resident, then I would request that person again if you can.

You have every right as a patient to let your doctor know what makes you comfortable and what doesn't without having to disclose too many details, but specify that you are getting help for it (right?). You need to know what they are doing, what they plan to do and have them describe what they do before they do it if you don't understand what or why. I think by letting them know what your needs are, the more comfortable and empowered you will feel about your health care.