If she gets picked up in the city she would go to BARCS, so that’s really the only shelter your friend needs to keep on top of. I’d post some signs around the neighborhood in case a neighbor picked her up and kept her. Your friend should look late at night (if it’s safe) and early in the morning, under cars and in other hiding spots. It’s not too cold fortunately. And definitely have them put some clothes, litter, and food outside. Maybe a cat bed if it’s not calling for rain. But scents that are familiar to home. I’m pretty far over by the park, but will keep my eyes peeled. Not that anyone is catching a cat that doesn’t want caught. Good luck to you and your friend, got my fingers crossed for you.