Nancy, try this, tell the little guy that she/this if she's there is his SOMETIME SISTER I bet he'd take to that explanation, say its sort of like him having a COLD SOMETIME. My ex had a daughter that was a similar problem for my youngest and thats what I told him whenever she graced us with her exhalted presence. He was about 3 or 4 and that explanation worked just fine, he understood that he had a sister sometimes....Kids are alot smarter than we give them credit for. I personally NEVER discussed her in front of my sons and they got so they couldn't care less. Good luck! [Big Grin]