Board Thread:General Discussion/@comment-7136468-20130621223743/@comment-11051098-20130628171007

I would guess the Vandenreich doesn't have any idea about her powers. Or Aizen could have told Yhwach about her powers when Yhwach visited him in Muken, but stated that Yamamoto wasn't too eager to use her or involve her in the Shinigami's fights, being a human, and that she didn't pose any threat to the Vandenreich's slaughtering of the Shinigami.