How about answering her with some heartfelt words about Tom? Mention the things you learned from him, the last time you saw him, some "life is short" insights you have, and who was at the funeral that she might know. I recall at my last class reunion that it would be the last time I saw some of them, forever. Sounds creepy but makes the time together really count
As sad as it is - give her something to miss. NOT YOU, specifically...but the life you once had together.
No expectations. Just a thoughtful letter you'd write a friend. This might end up becoming a safe way for you two to communicate.
Let her get comfortable with more communication, without ANY expectations from you for more (I cannot stress that enough)
and later on, in MONTHS...see what happens once a safe friendship is established. But post here first. Worst case scenario, you still have some friendship with her and that matters Gunny. It really does.
((( )))
M: 57 H: 60 M: 35 yrs S30,D28,D19 H off to Alaska 2006 Recon 7/07- 8/08 *2016* X = "ALASKA 2.0" GROUND HOG DAY I File D 10/16 OW DIV 2/26/2018 X marries OW 5/2016