Dear Queenie,

I happen to know my father is cheating on my mother, and with whom. I have seen it for myself and I have proof. He doesn't know I know.

My mother doesn't deserve this and I want to tell Dad to choose between that other woman and us. I also want to tell Mom.

Queenie, what should I do?—In the middle

Dear In the middle,

It's not up to you to tell your father to choose between...