I can relate to what y'all are going through. My wife was one a vent, and "asleep" for three weeks after a battle with a rampant infection herself. Two attempts to remove her from it failed, but two weeks ago it finally worked. She was moved from ICU to rehab, and after two weeks is recovering well, wanting so bad to come home and login.
All you can do, I had to learn this myself, is be patient, and let her heal on her timetable. Sounds like y'all have that down pat. It can still be scary at times, but with time in gets better.

Will be seding good vibes her way for a speedy, safe recovery.