No matter what, it looks like the school will need to hire a lot of Counselors. Realistically speaking, even if you bring in a new character, the RP should become very interesting very fast as a result of all the collateral damage from the last two days of attacks.
Lol. Not to mention one for a very confused AI and technopath. If I'm reading what's happened to Serena and Cerebro correctly, they did merge. That's why there are now two Serenas.