I don't get how she can expect this to pass as harassement.
If you enter a con with a guest pass that isn't yours, security is gonna escort you out, end of the story.
BuT i BoUgTh A tIcKeT tOo!
So what? You break the rules, you're out, plain and simple.
Let's see how little sense it makes with other breachs:
Enter the con drunk, got escorted out, BuT i BoUgTh A tIcKeT tOo!
Enter the con naked, got escorted out, BuT i BoUgTh A tIcKeT tOo!
Enter the con armed, got escorted out, BuT i BoUgTh A tIcKeT tOo!
See how stupid it sounds?