That's not cool man. Just because she can let their stupidity role off of her doesn't make her an immediate slut! That's just rude. This poor woman looks heartbroken now, I don't see their friendship continuing anytime soon.
Is clearly a problem related to the proverbial "two sides of the same coin". The story and ending: perfect! I mean I can see bitterness oozing from that comment and how it affect the other girl. The story is short but the dialogue and the character design make it squeeze out all its potential