Daphne chose not to act against him. This time she simply cast a spell to help her see through the mess the minor explosion made. Chaos was always good. She could work with chaos. However, she also wanted to see what he could do beyond simply defend her. Not that it wasn't a bad approach, just that it wasn't all that exciting.
She threw up a repealing charm in a wide circle around her so that he wouldn't be able to get close, but also wouldn't be able to exactly pinpoint where she was based on the spell.