Oh, yes, humor. She smiled back somewhat sheepishly.

"For the full size creature, I need at least two cases' worth, or a small room full of books. Just to carry one or two people, I can make a smaller one and... well, I can carry them, while it carries me. I probably have enough for that now."

She looked up at the building they approached, eying windows for lights (if the power was out someone might still have lanterns or flashlights) and also for what was the safest way to get in.