She snorted and cocked an eyebrow at him. "I think you were wrong about me...What was it you called me? A 'nightmare'? And I DID save you with the Devil's Snare, regardless of whether or not I immediately thought of the solution!" she exclaimed indignantly, and she rolled on top of him, fingers poised at his sides at the ready for a fierce tickle attack.
"I think we became such good friends when you bashed that troll over the head with its own club and I lied to McGonagall about why we were all there with it...Ring a bell?"