Mr. Incredible, The available means that the lady is currently available at Sheri’s Ranch. Let’s say you searching for a specific date or a specific type of party the lady caters to, by using the “Search Ladies by Date”, and the website returns the results. The “Available” will give you indication that she is currently at the ranch.
The same applies when you get to a ladies profile from let’s say twitter or other sources, the site will indicate if she is available.