Any chance she has phone anxiety because she can't use words like 'boo' and 'vibes' when she's on the phone with a professional, and therefore is unable to explain her problem in adult language?
I myself sort of have phone anxiety (only because I grew up with abusive parents and if they were phoning me while I was out it meant I was in trouble, they would shout and threaten me over the phone), so I try to avoid phone calls as much as possible. BUT. When it comes to things like my health and someone at the other end of the line is rude to me or trying to belittle my problems I will definitely not back down. I pay taxes to get healthcare and I deserve to get treatment, no matter what the receptionist thinks. I completely understand people are different and they don't want to be rude or it's way out of character for them to be firm in situations like this, but then surely if her father is a dermatologist he could have referred her to a another one in his practice and she wouldn't have had to phone if it was that big a deal?