Just don't agree with the Bunco lady where the columnists say just let the conversation flow and talk about anything and let the child hear and the mother will then not let the child be there. Hello?! The mother apparently doesn't have a clue on how to raise kids. Just tell the mother directly that you don't want the child there.

LW1: So if you don't feel like being a grown-up and talking to your friend, then be rude to her child and curse in front of her. If you make everyone uncomfortable enough, the friend will finally make her child leave.