Dear Prudence,
My sister’s son attends an expensive pre-K program. When I asked her how she and her husband were able to afford it when we met for lunch one day, she told me something that left me reeling: She knows a man through her work who has a foot fetish. Apparently, he pays her the cost of her son’s tuition in exchange for several sessions each week where he gets to … do things with her feet. She’s been telling her husband that she got a promotion at work. When I told her this was essentially prostitution, she argued it wasn’t on the grounds that there’s no intercourse involved. I think what she is doing is appalling. Is it my place to say something to my brother-in-law?