Okay, if Cas is stopping him, then I'll go with him not killing her. Injuring with Loki showing up to save her sound good? Gabe said she wants Loki involved. She'll try to talk Loki down, or alternatively, she can be severely injured enough he'd have no choice but to put his power into keeping her alive instead of attacking Kaneki. Whichever you two prefer. Or if you guys have other ideas, I'm game!

I'm excited for this!