Sorry you are having such a difficult time. She may have been offering because she sees you struggling and knows that you are only seeing her temporarily. Even though it is against her normal policy, she knows you would only be contacting her until your regular T returns. It is probably something she does not offer long term clients.

Each T is different, and from reading these boards some seem to change their boundaries at will. Your best bet is to ask them directly if you want to know more details or the meaning behind the contradiction. Hugs to you while your T is on vacation.