So I was out to dinner with my fiance, his parents, his brother and his wife and a few other friends. We were all having a drink and eating and just having a good time. Now my fiance's brother is married to this girl that apparently doesn't like me and I have never done anything to her that would cause her to hate me. Well my fiance and I joke around and say ya know we only have four months left we can still back out and just silly stuff like that. Obviously we aren't going to back out, we love each other we have a wonderful home together and we have really built a life together already. Well I guess my future sister in law thought that was soooo hilarious the thought of me and my fiance not getting married that she just busted out laughing and laughed for a good five minutes. She has only one drink so she wasn't even buzzed I'm sure. She is constantly just saying remarks and doing this sort of thing to just be mean. I don't want to cause more trouble to I just leave it alone and don't even let her see that it bothers me but it really does. What do I say to her, if I should say anything at all? Just to add she isn't just this way with me its the whole family.