DEAR ABBY: I have a sister in-law, “Karen,” no one in my husband’s family likes. She’s rude and insulting and acts like she is better than everyone else. She feels she’s entitled to have family members watch her kids so she can do what she wants. (If you refuse, she drops the kids off at the door.) If anyone confronts her about her bad behavior, she claims she has anxiety and depression to make the person feel guilty.