Yaelle, I'm in a similar situation with a lesbian/super-liberal sister-in-law. She and her girlfriend are coming here in December for a couple of weeks. I've had to make the decision between keeping peace in the family or blasting her away with my politically conservative arguments. I've decided that familial peace is more important. I have a mental list of "safe" topics: my daughter/her niece, the weather, her job, my home business, the weather, sites to see in the Phoenix area, and the weather. It's going to be a long two weeks. LOL