When a dog is adopted, they go through a "honeymoon period" where they are adjusting to the new environment. It lasts about 2 weeks until they finally realize they live there and you will see a change it behavior - it could be for the better or for the worse. I think with consistent training and work with Sheeba, she would settle down and learn some manners. She needs to have a firm, loving hand and know a routine. I honestly don't feel it would take too much time to turn her around. She's still so young and as you say, she's sweet. I don't think she's been given enough adjustment time.