Ah, but there are so many ways to set it up so that never happens.
For example, you can have the kid run to the girl, and you chase after the kid to get him back, but only catch up to him after he's gotten the girls attention.
Then introduce yourself to the girl, and apologize for the kid running up to her in the first place. Just slip in that ever since his (the kid's) "mother" left, you've had your hands full.
Take things from there. If you need a visual demonstration, I'll post the youtube clip of Colts QB Peyton Manning performing the art with near perfection!