Oh, and Dr. T did call me "honey" once, in saying, "I'm a lot older than you are, honey." Which bothered me on multiple levels (saying "honey," seeming to forget my age, as he's only 7 years older than me). I told him in an email, and he was very apologetic, saying he'd meant it in a joking way, but he sees how it could have come across as patronizing. (And how the age thing is more about how he perceives himself, not me.) He hasn't called me "honey" since (nor any other term endearment, but I also don't think it's style to do so).

I wonder if it's something you could just say as an observation, like, "I've noticed you calling me 'hun,' and it's not really something I'm used to." Or "I was a bit surprised to get a selfie from you, as I haven't gotten one from a therapist before" or something like that. And just see what she says? Then she's probably less likely to get defensive (if she's even the type to get defensive--my T can be at times).