S.B.
I don't have a dog, so take this suggestion in that light... Have you thought of putting up some kind of wire mesh around the bottom of your fence so she can't get at the wood? Also, I thought the idea of getting her a playmate was a good one. Of course, then you would have to care for 2 dogs so that may not be an option.
I hope you figure out how to keep your dog and your fence!