Man, what a pretty dog. Amazing someone would let her go.
She looks like a Shepherd to me. Even her face seems to look like a typical black GSD face to me, except...I've never seen a long-haired black.
Is there such a thing? If yes, I'd say she's it. If not, I wonder what else is in there to cause that beautiful coat.
Her eyes look a little light too, but maybe that's just a combination of the photo, and all the black around them.