The major damage occurs when she triggers the Date Man that lowers enemies def :< I'll try to read the japanese wiki about her to see if there's nothing that nutaku left out like "when leading X troops"
[EDIT]
I read in the Japanese wiki that in the vanilla version of the game the skill 6 talons were not working and now it's fixed... Maybe Nutaku haven't launched that version yet... or maybe I'm wrong and it is working and I just don't notice any difference