Bean.....
Three things that have helped me:
1) Ask T to leave a voice message on your machine telling you she cares, will be back, etc. Then you can listen to it all the time.
2) Ask for her to send you a card. My old T used to send me a card. She may not, but you could try.
3) Ask her to write it down that she will be back, she cares, etc. Then you can see it all the time.
I feel for you! When my old T used to go away I would cry, get mad, and basically act like a 2-year old.