Another thought for you too Amanda.
If something like I've said is tried, when the time comes for you to get a little closer to the dog, there's some things to bare in mind.
If you're going to be on the "dogs property" (as the dog sees it), make sure you only go there with the owner, but it's probably best avoided for a long time anyway!
If you want to get closer to the dog to stroke etc (more attention == quieter dog), it's probably far better that the dog is restrained somewhere a little closer to the border seperating houses. That way, the dog stays on it's own property, you stay on yours, and the pair of you can build confidence in each other slowly, without over stepping the mark.
Also, until the dog is REALLY REALLY friendly with you, always have a treat in hand/pocket, but that doesn't mean you always have to give the treat
