[Hopefully she doesn't think so lowly of his skills that she would believe he couldn't manage to turn in time when she starts running around to get behind him. His armor isn't that bulky. Falchion lifts to block the blow and push back.]

Attacking from an unprotected angle is well and good on the battlefield against an unaware opponent. But against someone you're combating one-on-one, conserve your movements, and wait for the opening to come to you instead of trying to force it.

[Clang clang clang.]

You will inevitably face someone who may try to spin in place to deliver a sword stroke. That is the opponent you want to strike, as they must break eye contact with you in that brief moment to complete their spin.

[His shield comes up to push back against another of her strikes, and he smiles.]

Naturally, I would advise you not to perform any spinning attacks as well, no matter how grand or flashy it may appear.