In my opinion, you are still married and I would send her a card. My H left me a month before our 3 wedding anniversary and I sent him a card. But he did not even recognize our anniversary. So don't expect anything in return, not even a thank you.

H: 49
W: 47
D: 6
M: 6 1/2 yrs
H: Bomb #1 6-2010
H: Bomb #2 7-2011
H: Separated: 7-11-11
Reconciling 2-2012
Separated: 1-31-15 (I asked him to move out)