Her left handed dad - who grew up in a country which had no left handed things - wasn’t able to use the scissors.

That's interesting to me. I'm a lefty who's used to both types of scissors. That means I know how I need to pull sideways with the knuckle of my thumb in the right handed ones so they still cut well. But with the left handed ones I feel like I'm doing way less, I just pull and push up and down without needing the additional deliberate sideways pressure.