Have you contacted any rescues yet? If you want to place her yourself, ArmaniMan just gave you excellent advice to follow. Realize that placing a dogs should the right way will take weeks to months. She should be spayed bedore leaving you unless you are sending her to a rescue (then they will do it). Don't trust anybody who says they will have her spayed. They may be looking to breed her just for the money. Make very sure that their previous animals have been to the vet consistently (and make sure they aren't skipping out on things like dentals when needed).
Find out how they would go about training a dog, getting rid of undesirable behaviors, what they plan on doing with the dog if they can't keep it, how old their children are, if the dog will be kept inside or out, if the dog will be alone for extended periods, etc., etc., etc.
I'm sorry.
