Maybe remove magic altogether . . . how important is it to the story?
Should she lose this fight? Well, yeah. She's crippled. She'd have avoided the fight to begin with.
Magic can stay. It's vital for a few elements, after all.
Wait. She can't avoid the guard. That means she'd die. Ah . . . let's redo this scene.
If she's got PTSD, but no one's studied it or named it, Miola has to do therapy without knowing she's doing therapy.
No . . . it's better to let the tension grow between them. Then the plot can be more personal and less violent.