I am no DB guru but if I was you I'd ask her if she really wants to divorce. If she does then it's "ok". If not then tell her that you would also prefer at least a break in the D process and maybe she would be willing to retract her filing. Suggest it gently, without pressure, as an option.
If D does go through then you can continue with DBing. There have been reconciliations after divorce.
I wouldn't worry much about her medical condition. Take care of yourself, focus on yourself - it's a tough stage you are in. GAL as best as you can.
