What Breed is My Girl?

Can you please help me figure what breed my girl is? My partner got her off a friend and we know the mum was a Rottweiler (not sure 100 pure%), but are unsure on the dad. I've always thought maybe a Bull Mastiff cross Ridgeback?

She does look like her mum a bit, except the tan with black features. She has the same low abdomen and the same face shape. This is pic of her and her pup.

By jodieadamson