PM Matt Foreman from this forum. He's in Mesa and organizes some OL workouts.
CF Southwest in Tempe is a good place, have her ask for Ken and let him know what she's interested in.
She could look into Joe Micela's place, also in Mesa:
www.performanceone.net
I don't know of anything like what you're looking for in Gilbert/Mesa, but that doesn't mean something isn't out there!