Welcome to HW. I am sorry to hear you're having such a rough time. Even though you have "a really thick skin now" I know this is painful for you, so my heart goes out to you. I hope your fiance feels better soon. I do think it's important for her to hear that she needs to take her meds...I guess just communicate with her doctors to try and get them to get through to her about that. I would maybe also ask the doctors what they think about visiting, or giving some space, what christina said was also a great suggestion.
I can assure you that this will definitely pass, until then we are here for you. Please let us know how everything goes.