Well, at least Zuko doesn't punt her out of the field, as he's been known to do to the occasional n00b?

He parries, making sure to use the technique he'd just taught her, and follows through with a cut to her back as he steps so she goes past him, making sure to turn so it's the flat that will hit if she doesn't dodge, not the blade.

Fine as he may be with training people into a bruised puddle, he's not going to slice people up.