Hi there
I do know a couple of children that have had a Nissen, one after a tof, the other was a child with very bad oesophagititis. It seems the spincter into the stomach does not work efficiently, is this what has happen with your daughter?
I don’t often see the little boy now as he has changed schools but I will pop into her work maybe and see if she can offer any advice to you. Her son is 10 now he had a nissen a couple of years ago.
However, I am sure there will be many posts on here with stories of people who have been through this. Stay positive,
Kind regards
Delyse and Bernadette