Besides make Lafiel lose whatever reluctance to shooting them. Anyone who threatened the safety of her, her people, and her... well, in this case, fortification, was asking to be shot. She estimated how much of her had to be exposed to aim and fire, hoping the zombies had slow reflexes or bad aim.

Either way, she didn't trust that her defenses would last forever, even under only small arms fire. And being under cover meant she had limited ability to see if anything else approached.

Lafiel quickly shifted to the side, trying to aim, squeeze off a shot, then duck back before the rest of the zombies realized she was a target.