Hi and welcome to the forum. Your pup is very cute and her weight is fine.
I hope this helps ...
Does she have papers? f not you will never truly know what she is with 100% accuracy beyond her being a great pet.
I have not heard many say English x American when describing bloodlines.
What are her bloodlines? ... or is that just what the breeder said without giving any papers?
Nose color has nothing to do with which breed or type. The APBT
is not a breed that has different types listed as in some other breeds.
Nose color is just that the color of the nose. Many bloodlines can carry a variety of both nose and coat colors.
She does appear to have a a longer muzzle and not a very defined stop, however, that doesn't mean she is a mix. As she finishes growing filling out and maturing you will be able to take better guesses at what she is if you do not have actual papers.
Patch O' Luck with your pretty girl. Post more picts as she grows and enjoy the forum.