DEAR ABBY: My mother-in-law has a habit that makes me sick to my stomach. When we are out to dinner with her, she frequently asks, “Can I have a taste of that?” Then, without waiting for a response, she’ll stick her fork or spoon into my food and take a piece of it. It nauseates me when I try to eat the rest of the serving. I don’t know how to deal with this. She is very sensitive and easily offended, and I have always had the feeling she doesn’t like me and doesn’t think I’m good enough for her son.