I am so sorry Hazel :cry:
I don't think anyone here is out to get mad or yell at you. We all just want what is best and as we are not in your shoes it is no ones place to judge what is best other than you. We know how much you love Hazel and know that you wouldn't be taking this route if there was an alternative.
I agree, there are some people that have chemical imbalances that make them unable to fit into normal society, I don't see why it would be any different with dogs. Maybel Hazel has something that is just not quite right. :(
Take care and vent here as much as you want - we all understand.