Yes it is possible she will return to that area.
You can get more info from this website on how to recover your lost cat
http://catsinthebag.yuku.com/directory
(By the way, my cat also on the way to the vet to be neutered, broke out of the pet carrier. She actually managed to split the plastic on the bottom latch and exploded out of the carrier. They were cutting the grass and the sound spooked her.
After a month of seaching my condo compound without any results, i finally think i have located her less than 1km away but in a very hard to reach place and the cat has turned feral and doesn't recognise me anymore. It has now been almost 2mths since she ran off in fear.)
I am now visiting websites, trying to gather information on how to trap the cat to retrieve her.
Please do not give up looking for your cat.
Good Luck!