The monsters got wounded by his attack, but not a single one died. Since the other group was attacking nonstop and Lirene couldn't leave the wall created by Yolanda, her only option was to turn around and use Fireballs at the enemies that Zane had just stopped, and so she did that.
Her magic projectiles crossed that distance in a single second and hit the head of two monsters. When that happened, Lirene killed them, but the others that got hit in the chest or wings resisted. She clicked her tongue in annoyance.
"Sorry… it is weird to aim against flying enemies when I don't feel the weight of my weapon," Lirene said.
"Just focus on finishing them off as quickly as possible," Zane said. "Using her magic like this must consumer her mana over time, and we can't let that do that forever."