I had a very hard time with my fresh off the track greyhound also. I didn't know about GT back then so you are already one up on me. She busted out of her crate, chased my cats, chewed up tons of stuff, peed all over inside, wouldn't pee in the snow, was terrified of my husband and seemed so unhappy. I made the call to return her but then decided to stick it out another week. Turns out she had a urinary tract infection, the snow melted and she slowly started to get the hang of being a pet. My point?? I had no idea it would be sooo hard. I made a lot of mistakes but somehow we made it through. Gracie has turned into a great dog and yours will too. Good luck.