"No you're not," the Slytherin said, pushing herself onto her feet and walking over to the boy on his knees. "If you're an idiot, then there's absolutely no hope for the rest of us," Vivianna stated, upon reaching the young Ravenclaw.
The witch let her hand rest naturally infront of her thigh, palm facing Bertie. That way, it could be interpreted as a hand for the upset boy to grasp and pull himself up, or just a slightly odd casual position, if he wasn't yet ready to stand. The girl might not be brilliant with comfort, but she was pretty darn good with manipulations and subtle gestures.
Vivianna still had no idea why the boy she thought of as a little brother was upset, but she wouldn't push. Not yet, anyway. Wanting to reassure Bertie, the teenager spat out the first thing that came to mind, "someone burned my potions notes the other day. I threw an absolute fit. You can ask Zane, I ended up hunting him down to plot some sorta revenge."
Allowing her other palm to settle on the shoulder of the wizard kneeling at her feet, Vivianna let out a gentle sigh. She never though she'd think this, but upset vampires were so much easier to deal with. All one had to do was keep them from attacking you, and give them a bit of blood, they calmed right down. But with humans you actually had to do all this emotional stuff, that the Slytherin admittedly had very little experience with.