I agree that it may be helpful if you could first just ask as to why she does what she does and then take it from there about what you feel comfortable asking her for.

I have a bit of an opposite problem -- I internally freeze up and freak out if someone (who I don't know in the Biblical sense, so to speak) is within 4-5 feet of me (to the point that I stop on sidewalks to let people pass). I've mentioned this in therapy. So, my therapist's behavior of standing around to shut the door in the tiny space once I walked in and again to open the door (in that very tiny space when the door was next to where I was seated) was annoying as heck. I thought of bringing it up to make her stop but thankfully, she stopped doing it except on the rare, random occasion -- I'm pretty sure though that the reason she stopped is because she got more 'comfortable' with me i.e., didn't feel like she had to maintain some level of 'formality' and not because she actually made the connection to my issues around personal space (not because she doesn't care about that but because that's a level of thinking / analysis that I don't think she'd ever bother with!). But, if she does start doing it in earnest again, I most certainly will tell her to quit it -- so, in some ways her behavior in this aspect has / would be intensely personal to me but at the same time, having seen how she functions, I'm not sure I can do anything except watch out for it on my own.