I think this is an inappropriate question in so many ways, First we are talking T1 here, sugar does not cause T1, no one was ever cured of T1 by giving up sugar.
@Osob herself is a long time member here and a T1, I can hardly believe that she sabotaged her daughter’s health either intentionally or unintentionally. I’m sure she knows what is a proper diet.
There is a genetic component to T1, could it not be possible for her daughter to succumb to the same genetic condition that triggered her T1.
For @Osob, Please know that you are part of our TuDiabetes family and have been for a long time. Your online family is here for you.