Coworker driving me nuts?

I work in a low income clinic and it's usually just me three days a week but my coworker (she's a nurse practitioner) is here twice a week for two hours both days. She drives me nuts. She's "bopped" me on the head with a patient's file twice now in front of a patient. I think it's very condescending, offensive, whatever you want to say but it makes me feel like she's treating me like a child. Today she calls me at 3:25 and tells me she has a hair appointment at 3:30 and so she might be a little late and she didn't forget she has to be here at 4:00. It's past 4:00 now. Why would someone make a hair appointment half an hour before they were supposed to be at work. BTW, she's not my boss. We answer to a bigger clinic three hours away. WWYD?