Illegal Pitch?? or just borderline....

[I Ump 2]

ASA rule set. JO tourney. Fastpitch 18's

Lefty pitcher. Left foot (pivot) has back of her heel of her cleats touching front of pitching plate. Right foot has toes on pitching plate, towards the rear. Pitch now begins. Pivot foot never moves or slides forward. As right foot/leg heads towards home plate on pitch - she must raise her heel and pushes off the ball of her foot - a good 6+ inches from the rubber - and drags her toe several more inches. Her pivot foot never leaves the ground.

Legal or illegal?? Do I need to offer more info.?

I don't do this age group since my dau. plays in this age so it is not my call and won't be.

Thanks for the opinions.