Do you conceive this as a one-off feature film? ?Or the origin episode for a film franchise? ?(I myself think the story certainly has potential for setting up the latter. )
Whatever, I suggest the inciting incident may need some polishing. ?First of all, does being descended from Aztec gods convey some ultra-human powers? ?I'm guessing it does, but I shouldn't have to guess. ?So I think the logline needs to say so because that is the story hook, the strongest selling point for the story.
Being a descendant of Aztec gods certainly raises a lot of career possibilities for the Latina. ?So of all the things she could do with her powers, what incites her to take on the bad hombres?
Well, one obvious answer to that she vows to take on the bad hombres ?to avenge a great injustice, the death of beloved ones in her family (father, mother, both, take your pick.) So I suggest the logline needs to indicate that. ?This justifies her career choice, strengthens her motivation and makes the stakes personal.
A final point: ?loglines for fictional stories should need not, in fact should not, include the names of the characters. ?Movie makers don't care about names at this point. They do care about what kind of characters they are -- their defining characteristic. ?It's sufficient to say that she descended from Aztec gods and he is a shapeshifter.
Best wishes for this story.