If you stand the shoes of the parents of the kid,

yes. we all should learn something from this incident. However, what we are debating is the "paper Mariage" MM how she should deal with this incident.

I f I were she, even I would not like that kid either. I will treat hime nicely, at least buy the icecream. Make sure my friend's relationship with the professor is not damaged by me. Then I probably will never play with this friend any more since her irresponsibility or her troubled postion with the professors.