Bay, I'm sorry your T has to take time off, and I hope she will be able to return when she is better. I know you and she have a wonderful relationship and that she will make every effort to stay in touch. Writing letters is great! I grew up with pen pals when it really meant pen, not emails! I'm sorry you don't have much time to process her leaving but your letter exchange can cover anything you missed.

I know it's not going to be easy. If this were happening with me and my T, I'm not sure if I would be coping so we'll. But the time WILL pass. Hugs.