We can still maintain relations with certain people based on familial ties or old friendships.
Yes, I have two sisters...one is a kind and good-natured "fervent Christian". The other is very difficult to communicate with because she has a very negative and aggressive attitude. She isn't all "bad"..it is about a 50/50 chance whether she will be in an okay mood or in a negative mood. Luckily she lives in another state so I only see her once a year when I go to visit family. I have decided that I want to maintain some kind of connection with her, so will talk on the phone occassionally. But I really need to "take care of myself" and that means not letting her attitude bring me down, as well as remembering not to confide my feelings, or too many details of my life because she will twist them around and make it "unpleasant". So I set boundaries within myself to be clear about my connection with her, and to be clear about what I will and will not tolerate from her (I can remove myself from a conversation when it gets too unpleasant).