The more of your posts I read, the more it sounds like you have a dog with bladder control problems. You really need to talk to the vet about it. You might ask the vet about anti anxiously medicine too. It sounds like you could cut the tension in your house with a knife. Dogs can't cope with such an atmosphere.
Like many sites people post links to, I am not impressed with ''Smart Puppy"". There is a ton of garbage on the net. It failed to address the importance of building a dog's confidence. Doing so may help even with the atmosphere in your home. Start with obedience training. The key to most behavior problems is approaching things using the dog's natural instincts. Dogs see all the people and dogs in the household as a pack with each having their own rank in the pack and a top dog. Life is much easier if the 2 legged pack members outrank the 4 legged ones. You can learn to play the role of top dog by reading some books or going to a good obedience class. A good obedience class or book is about you being top dog, not about rewarding standard commands with a treat. Start at
Raising Your Dog with the Monks of New Skete As you praise the dog for following your commands, it will build its confidence.
Play tug of war with the dog and lose. However at the end of the game, take the rope or toy and put it up, less the dog becomes confused about who is top dog. Ropes from the pets' store quickly turn to hazardous shreds. Ones I made lasted much better. Go to a hardware or home center that sells rope by the foot. Buy 2' of 3/4" poly rope. Melt the ends, and tie knots in it. Get them as tight as possible, put it in a vise and pound it with a hammer. Watch carefully, and be ready to discard when it comes apart.
Having a den to live in may help too. More so in your home. Having a crate with the door open all the time to retreat to when things become too much, could make a big difference. The sticky, that I have already mentioned, discusses crates, but not introducing an older dog to one.
A dog that has not been crated since it was little, may take some work.
Start just putting its toys and treats in the crate. Praise it for going
in. Feed it in the crate. This is also an easy way to maintain order at
Feeding time for more than one dog.
Once the dog is obedience trained, you control excitement wetting by putting the dog in a down stay. It also helps to have the dog empty its bladder ahead of time if you can. Before guests arrive, take her out and let her urinate. It is usually much less likely to be a problem on an empty bladder. In unexpected times, it may work to pick her up and carry her outside. Dogs usually won't urinate while being carried. I frequently use that technique when I have had a young puppy in somewhere for a while. Quite often they would never make it out without urinating. We certainly used it last April when we spent a weekend at a convention with an 8 week old Golden.