I'm assuming you don't have a pedigree? Without one, you'll never know.
Well, without peds won't know for sure, but you are aware that true APBTs are usually lean...not bulky.
Yep without a ped, you will never know. She is pretty leggy, maybe APBT/hound? I wouldn't say Pharoh Hound though. Whippet or Greyhound could be possible. And do not waste your money on a DNA test, they are crap. She is a beautiful girl, just enjoy her.