I think she is a beauty!

Looking through the pic's you have posted and I agree with what someone said earlier that her daddy may be a Rhodesian Ridgeback.
Her legs and muzzle, to me (no offense to anyone), just do not fit in with the GSD or Mastiff pups I've seen - but matches with the RR pup next door.
Although the ridge may not be visiable, this is not always something that is inherited by the pups when mixed mating - only sometimes do you get this.
To be honest, her Daddy may be a mix himself, so it's hard to say - but I'll stick my neck out with RR.
Either way - she is gorgeous and I think that she will be a very big girl one day
