Some background -
I work one day a week. She brings her DD along so charges less. So far, its been ok.
A few weeks ago, she rang me at work to ask if its ok if one of her friends dropped by. I said 'fine'.
But this week, I found out, through DD's conversations, that her friend and children have been round. But I was not informed.
How should I approach this? I don't want to upset her, but I want to find a way to let her know I know and I'm not comfortable with strangers being in my house without my knowledge.