Keziah could mention again that she can't eat most of what is here. (She physically can, as part of blending in as a human, though only in moderation. And most human food doesn't have any taste for her.) But this time, she smiles faintly and says, "What I'd really like is a warm drink, if that's available."

This is not an allusion to blood -- she can drink other things as well, and of course warm liquids are best. Tea, coffee, or even broth would work.

"Everyone has been so kind. Your collective hard work to make us all feel welcome is greatly appreciated."