Oh my. That is one of my worst fears!!!

One of my cats has never been outside, and the other used to before I got him (he was a stray). He is a door-dasher big time.
I am constantly worried for him because we live a couple blocks from a busy road, and there are coyotes around.
He has gotten out once since we lived here (3 years), and I was a wreck.

Your poor friend. I hope her kitty returns soon- what a worry.