She misses the correct pedals like they would be a hard-to-catch annoying mosquito.
That's because she didn't program her feet to automate their movements with pedal preparation.
Is this absolutely essential to your organ pedal technique?
Yes, I think so, at least in the beginning when you can't feel the pedalboard very well.
The change in your pedal powers will not happen overnight, though. It takes time.
But you will certainly feel small improvements each day you practice the same fragment with your feet over and over.
Like an onion you grow in a jar with water at the end of winter.
It's a good feeling.