DEAR ABBY: I will soon be retiring from a lay position in my church. As a former member of the choir, I’m being urged to return to it, which appeals to me. My problem is a member who has caused trouble in the past for me with lies and criticism. She is a very negative bully. In the past, she poisoned my ability to worship, and I want as little to do with her as possible. I’m afraid if I rejoin the choir, the situation will continue. I don’t want to upset the other choir members who are good, supportive friends,