Zane and the girls were rushing through the streets of Carson, dodging through buildings, and rapidly taking out any walkers that got in their way. They were being pursued and surrounded by half a dozen abominations at the most.
Naturally Eliza was keeping a close eye on what she believed to be a horde king, one who Bart had tasked her with capturing alive. Now that she knew the "truth" about Zane, she intended to kill him, and blame the death on Bart. Which would invoke the wrath of the other Horde Kings, especially the terrifying entity known simply by the name of "Lilith."
With Zane and the girls now surrounded with no escape, Eliza decided this was the moment to attack sending in her most elite servants, which were merely Tier III undead, to finish the job. If this was any other Horde King, then these abominations would be easily annihilated.