Do not get the wrap. I was fine taking PPI after having the wrap I have gastroparesis because they damage the vagus nerve. I have a law suit filed
I agree about avoiding the fundoplication as far off into the future as possible. You could end up regretting it if you put her through this too soon in her young life.
If you want to wean her off of the PPIs you have to do it in a VERY slow manner and it could take a number of months to slowly get it down to the point that 'pulling' her off of it doesn't provoke rebound reflux. People on PPIs have known for years that it's hard to get off the stuff, and a recent study in 'control' subjects - persons without reflux to begin with - documented that even those without reflux would suffer rebound reflux when they try to come off of PPIs.
Please don't move to the fundoplication, if possible, until all other underlying causes of the problems are fully investigated. That 'snow' HAS to have a cause. Get the biopsy reports and read them. I don't mean to malign your doc, but you'd be surprised at the number of things that are on reports that patients are never told about. If your doc can't find a cause for the 'snow' get other opinions. Also check out issues like food intolerances or eosinophilic esophagitis. I'm not saying that these issues cause what's going on, but the symptoms can be similar.
But first of all, get all her written records - doc's reports, biopsies, lab results etc - and read them.