Piper stood firm as she listened to maybe-Prue rattle on about random events that had taken place so many years ago now that it all seemed to be a lifetime away. However, Piper would never trust what she did not test first. Demons were sneaky and had ways of finding out information that others would never dream of having. This suspicion, and her deperate need to know if this was truly her sister or not led her to trying exactly what Prue suggested.
One flick of her hands and she should have combusted. It was a risk, but one that, at this point, Piper saw as necessary. However, nothing happened, and Piper's face melted into shock and something akin to relief. "OhmyGod, Prue!" se practically tackled her older sister in a hug. "Ohmygod it's been so long." she whispered, squeezing her tightly.