I caught a LOT of snakes for the couple years that I lived there and many 5ft Sonorans, but they were usually scarred up and imperfect. This female was the largest of them all at over 6ft (couple inches shy of 7ft...unheard of for Sonorans in that area) and flawless. Not a single nick or scratch. I always attributed that to her crazy aggressive behavior. I wouldn't want to mess with her either 
One of my biggest regrets in this hobby was giving in to another hobbyist who wanted her badly. Sometimes the story is worth keeping the snake 
-C

