DR Cilla, Phoebe is very pretty. I agree an allergy test to cats was in order. They could have been sick from anything, including something that was on her. Next time Sam & her mother visited your parents maybe they can give Phoebe a bath in an unscented gentle soap & then rinse her well with distilled water. That has always helped my allergies to cats since I'm really allergic to what gets on them, not to their dander.