Quick Riposte does sound silly the more I look at it, perhaps I'll give her Lancebreaker then. TA I'll keep too, requires less investment and I can save DB 3 for another unit. Plus, as you said, she can tank the Reds easier with TA.
I'm still leaning towards Luna for easier proc, but I might change that.
and I'll find something for C Slot, perhaps Savage Blow since my team is mostly nukes so it'll help get the job done easier. Thank you for the answers.