Though Zane didn't know it, his movements were being watched for quite some time now. Not by Bartholomew, or Maya, or even the mysterious and absent mother of death. No, his movements around the Reno/Tahoe area were being watched by Gwen.
Despite being a mere Tier I Horde King, Gwen's strength was on par with that of the lowest level Tier II Horde Kings, she had decisively beaten Zane's Ghoulish Ashigaru, and sent both Lily and the man himself running with their tails between their legs.
She was a fearsome enemy to be sure, especially with Zane and his party's current level of strength. But the crazed Horde King was more interested in Zane in ways that should not normally be expressed between the living and the dead, than she was in eating his brains.