I was at the event in question. It was really awful, what they were doing. The event was quite crowded with people who wanted to help, and the griefing was highly distressing for the organisers, not to mention disruptive. Charity auctions are difficult enough having to keep track of the bids in local chat, and having to deal with the stream of disruption from the few people who seem to get pleasure from denying other people fun only adds to the difficulty. Nonetheless, Mirika and her friends raised a respectable amount of money for a good cause, despite the efforts of those idiots, and she should be proud of what she managed.