I'm so sorry you're struggling, Ponderingfellow22 I agree with all the others that your girlfriend is not necessarely at fault here. Contrasts between our partners and our family members can happen, unfortunately. However, from what you wrote, I feel like she's handling the situation the best she can. She's not being rude to her, instead she just seems kind of annoyed and tries to ignore her. Yes, it'd be best if she was able to at least pretend to be kind, but that's not always possible. Especially if your sister is being rude to her. I feel like those comments towards her are really uncalled for, since she's not really doing anything that bad. If you really love her, my advice would be to just make her avoid your sister as much as you can, although I know it's not easy. I also agree with HopefullyLost1211 that you need to talk to your family about this and make them understand that you really love this person and ask them to at least try to be nice to her. After all, it is your own life and you must make your own decisions. I'm so sorry, I know it's painful when the people you love don't like each other, but unfortunately it can happen. Feel free to PM me anytime. Let me know if I can do something to help you. Wish you good luck! Let us know how it goes. I'm so sorry you have to deal with this