Come to find out, she was using King Arthur Flour Gluten-free Bread Mix. Now I am very leery about making anything from a box, because I would rather make it from scratch, which is just how I am. But King Arthur Flour has converted me.
What a beautiful loaf of bread. Thank you King Arthur Flour!
If you have tried any other gluten-free mixes from KAF, please post how you liked them. Bake on!