I was worrying about an e-mail I sent to T recently, worrying what he would think, that I was bothering him, that he wouldn't want to work with me anymore. TOTAL spiral.
And then some rational part of me took over and I realized - ONE e-mail can't change our relationship - something we have worked hard, over a long time, to build. It's the same with your T's vacation....one trip away won't change how she feels about you, or your relationship. I am sure of it.
My Teacher T taught me to use distraction first, then self-soothing, then call a friend, THEN call T, then call 911 (this is in case of emergency). It works. Can you find something to do to distract yourself from your thoughts? Sometimes a lighthearted movie works for me - it takes me away from my thoughts for a while. Or changing what I am doing. Teacher T told me try doing something constructive, like baking... I like coloring too.
What do you like to do to distract yourself??

