I feel this. Mostly I just don't like surprises, I might not mind the extra people but agreeing to do something with one person doesn't mean it's automatically okay to assume I want to do stuff with the 5 extra people you invite and spring them on me. Making more friends doesn't mean you gotta invite half the class... Doesn't really favor more meaningful contact either.
While she could've said it differently it's good that she spoke up after the fact.
