How sad. I'm sorry you were treated that way. It's not fair to you or the dog. Does the person you were dealing with run the shelter or was she just the dog's foster? Perhaps it would be worthwhile to you (and the dog) to bring your concerns and complaints to someone higher up on the food chain. If she is the person in charge and it's a not for profit, I'd suggest writing the board chair/president. Ultimately, they are not serving their mission if they are misrepresenting their dogs' natures, nor are they servicing their mission when they unfairly blame adoptive guardians when the dogs live up to their true nature. No one benefits from that kind of approach.