So...what's happening with Sheeba?

I have to agree with the others. I think you need to have your dad/brothers spend some time giving Sheeba some treats and things like that. The way I see it is, she was in a shelter, which means she was abandoned, so if you were to give her back right away, wouldn't she be hurt? She is just a puppy and won't understand what is going on. And as KayAnn said before, she will probably be very confused. Please, I beg of you, don't give up so soon on her. Or if you do, I agree with Adoremydogs, I wouldn't consider another dog for a long time. Best of luck to you on your decision. I hope it is the right one. (And if this is about your parents, I think you should show them these posts. I mean, look how many people are against giving Sheeba back.)
P.S.--I'm not trying to be mean, and nobody else is either, so please do not think that.