Are you a Sporty or Girly Girl
There are some people that flip out about getting your new outfits dirty. If your mom says she will be mad if your outfit gets dirty but it is another thing if you flip out about and not talk to the person that did it.
Are YOU that kind of person. I don't think that is a good thing to do but that is my opinion. Tell your mom your friend accidentally did it they did not mean to not flip out and not be there friend again.