Another perspective: none of this should be your job, aside from paying the co-pay. You are forced to set things up for yourself and for her, rather than have her take care of it for you as nearly all other therapists would. And while she absolutely intended what she said as a compliment, instead on some level you feel uncared for and unseen. She is missing the dynamic at play and reinforcing the status quo by saying "thank you!" rather than "you shouldn't have to do that." But it seems like kind of a little thing to feel frustrated with having to do for her, so rather than balk at it or get angry, you just feel generally uneasy and unhappy. (It might also subconsciously link to having to be prematurely self-reliant in childhood too, or at least it would for me.)