have you thought about finding someone who could foster her instead of just adopting her out until you find yourself in a better financial situation? There are some kind souls out there who might not be able to take her but could instead provide a home for her short term while you get back on your feet.
She is a gorgeous cat and she looks like a sweety too. I hope you are able to find a situation that won't seperate you from her permenanty.
I would suggest posting on petfinder.org or your local craigslist.org, as well as putting up some flyers in pet stores, shelters and vet clinics.
One other thing I will mention is that it is not a good idea to advertise a cat for free unless you are able to go to lengths to make sure she gets a good home (interviewing people, asking for a home visit, etc). Free cats are much more likely to fall into the wrong hands... people who won't take care of her or just want a cat on a whim, or even worse, people who will take her for laboratory research, dog bait or other cruel means. Most people who would give her a good home would be happy to pay a small adoption fee.