Are you sure she adjusted it correctly, my wife is 4 foot 11 and can reach the pedals just fine in my big old volvo. I can't understand how an average height woman can fail the reach the pedals
The seat was slid as far forward as it would go, I even adjusted the passenger seat to its forward-most position and they matched up so it's not like the driver's seat isn't adjusting properly. She tilted the seat-back up a little to try to help but to no avail.
I'm having a look at the whole assembly and how it's bolted to the floor-pan tomorrow. Six inches, maybe four, would do it I reckon.