I actually did ask her a couple of months ago. She replied, "I generally do not touch. That is just what I am comfortable with."

I am not a huggy, touchy-feely person, but I would like to know that if I felt to hug her when I came in or when I left that I would not be made to feel like I have the plague or lice or something!

I think approaching it with something like, "Has anyone ever broken a boundary with you? If so, what was it and how did you handle it?" would be easier for me.