Help! I feed a few feral cats and one very sweet cat that I had spayed a year ago showed up today after being out of sight for days with either a broken or mangled back left leg. She won't voluntarily go in a baited Hav-a-Heart trap, but she's letting me bring her food and water in a storm drain tunnel. I want to get her to a vet. Is there any safe over the counter medicine I could put in her food so that I could get close enough to her to get her into a crate? If so, what would be the dosage? She probably weighs no more than 6 lbs. Thank you all for any help you can offer.