Honey, I will tell you like this, when it comes to ex's and in-laws it SUCKS! Personally, I believe the only reason the ex is coming around is to create trouble for you and your husband. She's not that concerned with the father being sick, because if she were, she would've been coming around all along. So, put that out of your mind. She's not that concerned. Secondly, be aware of the tactics that mother in-laws use when it comes to daughter in-laws. You must remember that she's just a WOMAN, and you know how we as women can be….very catty. Downright buttholish is a better term, so use what you know being a woman to understand what's going on between them. Don't get angry with your husband about this. You said he let them know how he felt about it. They didn't respect his wishes, so you still be you and do the things that you've always done. Don't allow the ex to change your life in no way, shape, or form. Don't you give her that power, because once you do, she has you, and now your household is in an uproar due to her, and she will love it. Actually, this will be a GREAT time for you and your husband to push the negative people out of your life. Like I said, still be who you are, and do the things you've always done, but as far as what goes on within your household, keep it between you and your husband. Nobody needs to know your business, because believe me, it's being discussed. You can't control others ways, or homes, but you can control yours. You and your husband have that power. So, now you're eyes are being opened to the real mother-in-law. If she acts differently towards you now, they're talking about you, and whatever goes on in your household. Take it as a good thing, because now you know what you're really dealing with. Still go see your father-in-law, but don't allow that nonsense (the ex being around) alter your character. When SHE realizes that it doesn't bother you and your husband, she will leave. Because every time your husband expresses his hatred, or concern about her being there, the mother-in-law tells her. Oh yea, BTW I've been dealing with butthole in-laws for 13 years, so trust me when I say I know exactly how you feel. I have some stories that will blow your mind away….I hope this helps you, and keep your power girl. You are in control of this, because when the ex goes away, and she will when she sees nothing she's trying is working, guess who the mother-in-law is going to run to??? People never realize that when you treat someone wrong, it comes back to you. So remain you, and watch what happens.