Dear Abby: I'm a 51-year-old mother and grandmother whose kids don't talk to me. The reason: My son, "Aaron," was sexually assaulted by his friend, "Eli," and I told him his friend was no longer allowed to come over. I spoke to Eli's mother. She told me she'd take care of it and agreed the two shouldn't hang out. They were both underage at the time — Aaron was 10, and Eli was 13.

A few months later, Aaron told me that it wasn't Eli but his own uncle "Joe" who sexually assaulted him. I knew better. I talked to Joe and, of course, he knew nothing. I told Aaron to stop lying about his uncle and that Eli still couldn't come over.

Dear Abby is written by Abigail Van Buren, also known as Jeanne Phillips, and was founded by her mother, Pauline Phillips. Contact Dear Abby at www.DearAbby.com or P.O. Box 69440, Los Angeles, CA 90069.