Grips it with the "fattie" part of the thumb. The thumb itself is positioned alongside the index, off the ball. As such, it's back in her palm a bit... hence the loss of speed. Gets actual backspin, with the axis in the upper left... when viewed from catching her. The grip results in the cup... which really aids her in achieving as good of spin as she displays. Furthermore... she spins 40+ rps... pretty wild.
Correct... this is her rise. She actually gets 45 rps on this rise grip. Rick Pauly showed me this one while in Indiana this spring.