The chain is better than having her break the fence and get out, or putting her down. Maybe a dog trainer can help too. I was going to try to find another home for one of my dogs because we can't afford the tickets from our dog defending our kids against the neighbor dog. But I need to do everything I can. We're going to finish the fence (chain link), and we keep him crated when we are not home, and we will go to obedience classes. I understand the situation you are in, and I keep thinking the problem is bigger than I can deal with too, but our dogs are members of the family and I don't want to give up. Besides, think about how you will feel after you solve the problem and overcome this challenge! We need more successes, so keep trying until you can call this a success. That's what I'm going to do anyway. All my life I never really tried because someone always said I would fail. It's time to stop failing.