Luna Lovegood; the girl with nothing left to lose
The war changed her; it changed everyone, really.
"Confess, Lovegood," he snickered.
"But it wasn't me!" she insisted again.
"You don't have to play games with me anymore," he hissed. "I won't say a word."
"Liar!" she spat. "And I'm not playing games; you are."
"That hurt," he flouted. "But you can trust me, you know."
And then there was silence.
Because, after all, she was smart enough to know better, but naïve enough not to care.