Healthy looking adult female cat turned up in my Ds’s garden. Super affectionate. They couldn’ resist feeding her and she has now been there for 10 days sleeping on one of their garden chairs She’s there all the time, popping into the house sometimes but mostly in the garden. She’s doesn’t have a chip and there’s no response to local FB posts or to door knocking locally. They put a paper collar with details on for a couple of days, but it’s come off now. Is there anything else they can do?