We raised two daughters. We had a rule that no boys in the house unless the girls were together in the open. No boys in the bedrooms. And no guys stayed overnight. The boy next door came over one day and my youngest was home alone. they sat on the back stup. She decided to make some mac and cheese for the two of them. Just then her older sister came home and he was invited into eat dinner with them. I believe a parent has the finial word. So if she is made that is her problem not yours. Someday she will understand when she has children of her own. This rule would apply if I had raised boys. Never leave yourself in a bad situation. I will be praying for you. And what parent thinks this is a good idea?