Vivianna froze momentarily at Henri's words. Great Salazar, had this girl really killed her father? By accident or on purposed made no difference, not at the moment, not when she had so little information. Perhaps Vivianna was not the best person to really examine such things, the girl was still incredibly close to her younger cousin, after all. He had murdered. Technically it was different, her relative was a vampire who had been threatened and lost control. But couldn't the same be said for a child who lost control of their magic in a fit of rage?
Forcing herself to breathe and be calm, the Slytherin re-analyzed the situation. It did make sense, now, Henri's behavior. That crazy that would cause basically everyone to disregard the odd little things the girl did. Vivianna supposed that after living the life she had, the witch knew better than to disregard what could end up being important tells. The attitude fit with this story, like the girl was trying to hide something. Or maybe the girl was trying to push other people away, her cousin had done that too. It was a possibility that this girl had just been born slightly crazy, but the hidden intelligence led Vivianna to believe otherwise.
So that was it, the quirky Ravenclaw who was doing her hair was a murderer, and acted the way she did to hide that. But that didn't make sense! If this girl truly tried so hard to hide such a thing, why admit it to Vivianna out of the blue? She wouldn't, oh it was obvious! It was all a twisted diversion! The Slytherin had come too close to the truth for comfort, so Henri had led her off the trail with something that would successfully absorb all her attention. Merlin, this girl was good.
Realizing she'd been silent for slightly too long, Vivianna picked the easier statement to respond to. "Funny, neither have I," was her soft reply.