I wish I could be the crazy cat lady. Not only does she have tons of cats running around, she gets to wear a pink shirt. The best of both worlds.
She sells only four types of cats: Bombay (grey/black), Silver Tabby (white/grey), Cornish Rex (white/orange), and Orange Tabby (orange). You can see examples of all four in the second screenshot. Cornish Rex is up by the fireplace.
36 silver each.
The house is just south of the gate to Northshire Valley, the human starting area. I took the first screenshot with my back toward the gate. Just look for a cow pen with lots of cats running around it.