Found black cat/kitten! Anyone recognize?

I posted on Nextdoor, Facebook, and all the found pet sites, posted flyers, and scrolled through all the lost pet postings with no response, so thought I'd try here before we take her to a shelter. We already have two cats in a small house, otherwise I'd be very tempted to keep her! Recently shaved, super sweet, not microchipped/spayed, maybe 5-8 months old. Originally found near 5600 block of Minnesota Ave. on 7/4. Proof of ownership required.