Shijima is in group one of the Unseelie forces, and has no issues with letting the Jabberwock live. The sloughing of flesh won't bother her that much either, so...she's...really careless about herself and doesn't give a damn, whoops. She also has zero compunctions killing or fighting, so the battle won't give her much pause at all; pretty much everyone she tolerates is on the Unseelie side, anyway. If anyone particularly wants to do anything with a grumpy cat immortal, let me know. She's sadly just as likely to mess around and just seriously injure people as she is to attempt to murder them; playing is fun. I'm perfectly fine with her getting injured as well, though any major injuries will force her to ditch her human form to recuperate. You can find her abilities here, if need be.