User blog comment:Lia Schiffer/395: The Burnout Inferno 3/@comment-44061-20100314035431

Willingly is a little much. What it was is she was coerced into going with Ulquiorra under threat of her friend being killed. Then she later stays and does what she's told by their use of psychological manipulation to make her believe they aren't her enemy and so forth. It adds up to a lot of psycho babble that is somewhat realistic and somewhat fake, assuming that Ulquiorra is good at manipulation for this purpose which doesn't seem likely as he barely understands emotions. Her role was primarly to be the bait to lure Ichigo and friends with some captains into getting trapped in hueco mundo while Aizen did whatever. Other then that she held no real military value, other then her use of power in restoring the Hogyoku after its initial uses. In any case her only claim to the current happenings is that she swore that she would destroy the Hogyoku, something completely within her power making her the only one in the series capable of the feat. Seeing as she not good for much else besides healing anyway, this should finally make her role important to the outcome of the storyline.