Annie's gaze had been starting to drift as she listens to Beverly, and her brows had been creased a little in thought, but fight and combat makes her focus sharply on the older woman.

You just do.

"You learned this before you were taken to Zelion?" she asks, still frowning. "Why would you need to know how to fight?"

Starfleet favours peace, peace, peace, it seems, and Beverly's a doctor. A healer.

What purpose would there to be to fight?