The story you related about your daughter is interesting. It made me recall some information about fructose sensitivity and children.
Infants played a role in the identification of fructose sensitivity. Some time ago it was discovered that some infants that exhibited a failure to thrive were found to be fructose sensitive. As soon as applesauce, apple juice and other high fructose foods were removed from their diet the problems disappeared. For fructose sensitive individuals it doesn't matter if the applesauce or juice is sweetened the native fructose in the fruit would still be a problem.
The web site by Mother Linda on how HFCS is made is very informative but a bit overstated. The process she describes while it seems complicated is actually quite straight forward and she says HFCS is much less expensive to produce than sugar. On the other hand I cannot eat HFCS so no matter how it is made I see it as non-essential food
-------------------- STABLE: ♂, IBS-D 50+ years - Science of IBS