ISH! Until you can get your fiance to understand completely about how you feel, and support your decision, you could be causing some stress in the family, even though it's her that's doing it, but 'they' will think it's you making waves. I'd work on your fiance and get him to understand. Cry if you have to and if you think it'll help him to understand that you've been hurt by the things she's done/said, and that she is not welcome at the hospital. Perhaps if he truely understands your feelings, maybe he can have a chat with sis and get her to back-off, or piss-off. She won't want to miss the visit, so my bet is that if she knows how you feel...she will probably start being nice, especially if she thinks that she won't be invited to the hosp. If he still doesn't understand,..then make a deal with him that none of his family are welcome, for fear of singeling her out and hurting her feelings. Perhaps he'll be willing to see reason if you deny him the entire package, instead of just one missing piece. (like we do with kids...one piece of candy, or none....of course, they always choose one.) If that still doesn't work, then I'd tell him that you will call her yourself and tell her that she is not welcome...certainly, he'd rather do it tackfully, thinking that you would not let his sister down easily. If it still doesn't work, I'd make that call and tell her how you feel and that she is not welcome. Good luck.