Why are my cat's ears warm and nose dry? Is she sick or overheated?

A cat's nose being warm and dry isn't used as a sign of illness because their nose can go from wet and cold to warm and dry just by laying in the sun or next to a heat source. Molly's ears being warm could indicate a fever, but if she was laying near the heat, that could also be the cause of it. Given that she is eating, I would monitor her for now. If she stops eating, becomes very lethargic, or develops other signs such as vomiting and diarrhea, then I would be concerned and have her seen by a vet. I hope this helps!