I'm curious -- does she not see the impact that saying this would have on you? Especially if she's not introduced it gradually (instead just saying "from now on...") and is not willing to offer anything like a phone session or some other sort of check-in in lieu of the in-person session?
I can understand her not wanting to share why she's doing it etc but this seems like a rather sudden shift and not something that most Ts would do suddenly (unless the norms are different where you are)?
This seems a bit like screwing up Therapy 101?