Although it did make him happy to see his spell hit, he wasn't so thrilled that she quickly got rid of the effects. No matter, there were other spells to work with. And he was lucky this time around. She didn't cast anything his way, so he had more time to work on something.

The first, and easiest, thing that came to mind was setting the bush on fire. The one thing protecting her would be her downfall. But since he had a few seconds to think, he needed to use his Ravenclaw mind. Here's what he knew so far: A) she had a hard time walking, and B) she seemed to have a hard time defending his spells when he was quiet about them.

With a smirk on his face, he bent down, hoping the line of bushes would help hide him. And with a quiet "Scorching Spell" He sent flames towards the bushes.