User blog comment:Xilinoc/Ch. 682 - The Two Sided World End/@comment-3185063-20160714185803/@comment-26091912-20160715034508

She's done more than Shinji (seriously, what has he done this arc?):

- Took out a bunch of Soldat - Healed Sui-Feng and Omaeda's sister - Currently taking care of Shinji (because he's so useful, right?)

Of course she's not going to be able to do a whole lot in terms of fighting, she's only a lieutenant. Only Rukia and Renji have been useful on that front.