Well, those are really Mastiff-y feet . . . and that rear end has a Fila look to it, and with you being in Baja, that's a definite possibility, I'd guess. The ears set up high on the head like that suggest some kind of Terrier in the mix as well - could easily be Pittie or even AmStaff.
Time will tell, lol. She's a dollbaby, whatever else she is