Psychic energy usually, but I don't think it's specific. It worked with my friend Noah, too. And he's a ghost. [ She says it all as nonchalant as ever -- these types of odd things had always been a part of her life. -- but her actual memory of it is far more terrifying. ]

I haven't really gone around trying it out that much, it's not something I usually tell people back home. [ Blue already comes off as a weird sort of girl to her schoolmates, she didn't need to add fuel to the fire. ]