She's a sword person for a reason, Yukine. She always relied on others to do the healing and buffs while she charged ahead into the fray, okay.

She looks suitably impressed (and maybe... envious?) when he cuts those arrows apart.

"Well... you didn't explain it that well! You made it look like all you do is draw a line, but there's got to be more than that, right?" Otherwise, hers should've worked too!