My lovely German Shepard/ St. Bernard puppy is destroying my house. She is very anixious being left alone, and chews on everything while we are gone, we have tried to make her, her own room but she is a hudini and has figured out how to get out a locked door. She jumps through windows. She is generally well mannered and just chills when we are home. Its only while we are gone that she cause problems. I havent been able to find a crate that is big enough for her. Any advice on how to keep her calm while we arent home.