I have to catch a few of the wild cats around the trailer park. I had no problems in my case, I put it right out on the porch, didnt even cover it and had a cat almost immidiatly after dark. In your case you may need to put something over it since she is used to eating there in the open. You may catch someone else also. I would only put it out when you are able to keep an eye out. If you do catch her you want to get her out as soon as possible. It can be very traumatic and sometimes they will injur themselves, so quickly getting her out would be important. Release her into a small room until someone can come get her. I remember you said someone would take her correct?