There were plenty of other seats available, but he sat right next to her. He didn’t say or do anything, but it was off.

Out of sync behaviours may be harmless but, err on the side of caution.

I am trying to spend more time developing my daughter (she is only 18 months now) to be attentive to details. So far, it has led to not being able to hide anything at all from her. I am both happy and concerned for the future :)