Claire listened intently to the words of the Elder Yama, trying to remember every word, every phrase, and every inflection for later; all could potentially reveal useful information they would need to survive. If what the Yama said were true - that the undead were going out of control and the dead were rising of their own merit - then it was indeed a bad situation.
At least from her human perspective. She had never much liked the idea of raising the dead; there was something about it that just seemed... wrong. Logically; she knew that necromancy, like any form of spell-craft, was a tool that could be used to any end - good or bad, but there was something about necromancy that made her believe it had more bad uses then good.
Shaking her head clear of the thoughts; she began to put the pieces together. "The dead are rising... Maybe that's what that crab thing was; some kind of undead... crab... thing." she thought to herself, her line of thought breaking down toward the end, when she had no words to describe the crab. Fortunately, it quickly recovered.
The story would explain Ivaan's feelings on the crab being controlled, and support the words of the Yama. "Okay... so we ran into an undead crab that, I can assume, no one intentionally raised... that corroborates Yermy's story. That suggests the other side of it - the lack of control - is also true. In which case-" she though picking up where she had left off.
Claire took a moment to stare down the street at the obscene amount of ghoul-guardians. "-I wonder who's controlling the ghouls then?" she finished the thought, muttering it aloud to no one in particular, her train of thought coming to a disturbing end-of-line.
She completely missed Ivaan's question/suggestion while she was thinking it through.