DEAR ABBY: My husband and I are drafting our wills. Our sticking point is my son’s wife. She has had affairs and spends money like crazy that they don’t have. Is there any way we can shelter from her any inheritance he might receive from us? We considered hiring a private investigator but wouldn’t know what we’d do should a current affair be discovered. We couldn’t tell our son. Please help us decide. -- TACTFUL IN TEXAS