The official rules answers on ATT have said that Action flaws apply to both parts of a linked power (like Disintegrate). This ruling could affect Temper's power, replacing the Distracting with the second dose of Full Action - or keeping it and adding points, probably in Progression to improve the amount of inanimate matter she can destroy. On the other hand, I think her power is already good without this change, and it seems a little like counting the same flaw twice. So I'd be fine with the power as is - it's not like all the ORQ responses have been well thought out: just look at all the contradictory grappling answers.
Otherwise, I don't think I want to change anything significant. I could see moving a few skill points around, or something, but she's pretty much fine as is - unless you want to request some changes.
From the description, it sounds like you're going back a few rounds for the Danger Room, since Pyro and Miranda had already arrived before. Okay. Since everyone there was KO'd, I guess Temper would be waking up in the infirmary. What a way to start things off. Not even at the institute a full day, and she's going to the only person who was in the danger room waking up... The perfect way to inspire to trust. And if she's waking up disoriented, in a strange place, then her reaction probably isn't going to help.