My guess would be Lab or some kind of retriever and either Dobie or Rottie. She could have been an accidental breeding, but I would probably bet she was some backyard breeders money making scam. Mix Rotties and Chocolate Labs and poof, you have "Rare Red Rottweilers". Of course as pups who would know the difference at first.

She looks like my Rottie/Dobie? mix in the face in her bath picture.

She's very cute, where did she come from?