Everyone knows cats are nosy, so it is entirely in character for Kreyu to stick her nose into the cup. Not close enough to drink it, but the scents are clear. She makes a rumbling purr. No poison, so far as she can tell!

(And it isn't poisoned, Kirke is just afraid of being punished for a spill or any damage to the drinking vessels.)

Kirke has placed the pitcher back on the table when she catches sight of Xenophon. She goes pale, like she's seen a ghost. "He told me you were dead!" she blurts out to her brother. Then she glances at Skellig, worried about his reaction to her outburst.