So sorry about your kitty.
In our neighborhood here in So Cal. People do not let their cats out due to the coyotes. They will be gone in a day. We even watch our dog all though we are in a newer subdivision all fenced. They jump the fence no problem. We have the Padres national forest behind us and Angeles Natl Forest behind and across from us. We are on the I-5 right between the two.
We still like being where there is some wildlife LA is so congested.