Bless you, Momma. It was Sheba's lucky day the day she found you. And she is a beautiful dog.
I feel so bad for pitbull's because they have such a reputation that they have to overcome even when they've done nothing wrong.
I can tell you right now that I'd take my chances with a dog long before I'd take my chances with some people I've known.

Bless you for rescuing her.