When Sally leaped up, Verity was left for a moment grabbing uselessly at ankles that were already too far away. But it was only a moment later that she was up and after Sally, shoes skidding and laughing so hard she could barely breathe.
Sally was throwing the balloons wildly. Several glanced off her, exploding in the hallway. One hit verity low in the chest, knocking her back for a moment, exploding all over her.
Still advancing, even as Sally was throwing more balloons at her, Verity got her fingers around one balloon and swung it like a cosh at Sally's head.