I suspect you'll find she's still pretty much as available to you as before. If you call or text, she'll get back to you between clients or later in the day. She's still there as always for emergencies. It probably feels like more of a big change to you than it will actually prove to be in reality. Try to take a few deep breaths and rather than worry about what is to come, take this like we really only can do anyway, one day at a time. Sorry the thought of change is frightening to you, but you have a good T who will continue to be there for you as she always has been.