He'd taken her freedom and her skin away, of course she had to, so blame wasn't the reason the dark look crossed Hecate's face. If they'd found Luna just a little earlier, Hecate could have been the one to destroy him, and save Luna from that weight and the knowledge of killing that would be with her for the rest of her life.
If Luna's trouble hadn't overlapped so much with Marcie's, then maybe... But how useless contemplating the world as it might have been instead of facing the world as it was. "I believe you, Luna. We'll deal with the body-" and his ghost she thought, the violence and the sickness in this house was want to manifest, and if he'd stalked Luna in life, that pattern may be strong enough to haunt her in death, too. Well, not with Hecate and Qebhet on the case. First things first, though. "Let me see your injuries," she said, stepping around Hecuba to sit beside Luna.