I'll certainly let her know to simply not worry much about her left foot, as it can be just about anywhere. She currently only has her toes on the rubber but I'll be sure she knows it doesn't have to touch. Perhaps it will end up in the ideal position as she's in the zone.
Every few games she gets so in the zone and just mows down the opposition, and gets faster/stronger as she goes. Next time she hits one of those grooves I'll check where the foot is. Like any semi-smart parent, I pretty much keep my mouth shut when she's in the zone.
You will see people teach BIG gaps between legs (the men especially) but I don’t find it comfortable. I’m prob about10-20cm behind the plate but I couldn’t tell you asi just don’t think about it.