I am so sorry that she's cut off contact even further with this move.

I can't even imagine how heart breaking this is for you.

I don't know if this would help but maybe continue to write letters and just keep them in a box of some sort maybe the day will come when she's ready to start repairing the relationship and she might want to read them? or if not read just see that you have written her letters all along..

Please be gentle with yourself. Does your T have any advice on how to somehow try and cope with all this ???