@LeeRoy: yeah, but that'll just keep things interesting, right? Haha, I've never had a character as antagonistic/misanthropic as Cordelia before, and this is really fun. I'll have to make a nice character later to balance her out.

Abysse, I don't want to be rude here, so I apologize if it comes out that way, but there's really no other way her actions could be taken. This is a room full of people who have dealt with everything from criminals to supervillains. Whether or not they're cops is irrelevant-they're people. If you walk into a crowded room and hold up a detonator, people are going to flip out. Someone with a weapon will probably shoot you first and try and figure out what the hell happened later. Dropping a bag of God-knows-what by the door as you walk in, then coming inside and whipping out a detonator? 

No one knows anything about Agnes, other than her name and the fact she's pulled out a detonator. They can't deduce whether or not she's just kidding or if she's really serious, aside from the telepaths. Regardless, bomb threats are really serious. A quick google search says bomb threats can be punishable by up to twenty years in prison. A group of people who are probably at risk for PTSD who are used to dealing with murderers and generally crazy people really aren't going to handle a bomb threat well. Those who know what she's capable of, power-wise, are only going to be more afraid. If I see Volt, I'm going to be a little uneasy because I know he can shock me to death just because he feels like it. If I see him come in tugging around a generator, I'm going to be pissing myself. 

It doesn't matter what her intentions were, it matters how everyone else perceives them. Personally, it feels unrealistic for me to have a girl who's been in a bunch of street fights and learned it's generally better to assume the worst of people think that the new girl with the detonator is just messing around. I tried to have her play it cool and assume Agnes was joking, but setting off explosives (no matter how harmless) behind her kinda backs me into a corner here. You keep saying your character's not suicidal, but she definitely has a skewed perception of reality if she walks into a room full of incredibly powerful, hardened people with a detonator, then proceeds to actually set off explosives. If that's the way you want to play your character-unstable and dangerous-that's totally fine with me, it's an approach you don't usually see in superhero RP's, but you can't ignore the consequences of it.