This post explains the whole thing right here.In this instance, relative power rests with cdgexe as the holder of the plane tickets and accommodation. It might not have been his intent to establish a dominant position by inviting her to AGDQ (this is an unrealistically charitable assumption), but since he was able to kick her out of the room and threaten to cancel her remaining plane tickets, he wields a lot of power in this situation. It might not have occurred to her that this was the imbalance of power until she realized that, actually, being in intimate contact with this guy is unwelcome.
I'm leaving out the discord flirting in this look because the grooming-for-sex thing is too gross for the wee hours of the morning here. I've just been thinking about the leverage cdgexe held while getting intimate with a relative stranger and how fucked up it is to just turn around and be like 'well, you didn't fuck. you're gone.'
I hope that there are people at the event willing to host her in their rooms/people willing to help with a plane ticket if he does cancel them.