I can see both sides, it way more likely this is harmless. You easily assume Pete doesn’t have any malicious intent.
But…. As a father, I’m checking the mom
“I don’t want my daughter sitting on ANY dudes laps. I don’t like that shyt, and if you want peace like you say you do, make sure it don’t happen again.”
If the mom sees you as a rational thinking person that doesn’t fly off the handle at every single situation and she’s a rational person, she will respect your wishes.
but of course that would only happen in a perfect world.
This is why you pick your battles and don’t go HAM over every petty situation.