Thank you everyone. I just called the two local vet offices, but they haven't heard from her yet. At least they will keep their eyes open, just in case somebody brings in a little calico "stray".

My mother has looked for her everywhere, but still no Peggy.
She's crying now and never wants a cat again, she thinks it's not meant to be.

I don't think Peggy got lost and doesn't find her way (unless she's been chased by another animal and ran away), she knows her environment very well.

Kirsten