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Thank you very, very much to all who responded with empathy and recipes!
I won't post the recipes, but I saved them and any who are interested can
pick up playdough, sacher torte, several cookie recipes, and other
kids-friendly delights here.  The one I tried yesterday, play dough,
worked beautifully and did a lot to restore my motherhood status with my
kids.

Some very sensible, practical observations:

"They might as well get used to how a restricted diet works; if this is
hereditary they may face the same thing down the road."

Recipes from Hershey's chocolate chips, with gf substitutions, and creamy
vanilla pudding from cornstarch box.

"I met a child with PKU who has to drink formula all of her life.  Puts
things into perspective. ... Prayer, sleep, exercise, eating something gf
and yummy, talking all help."

Many wrote that even though gf diets improve health, they can be
difficult at times.  Stores do tend to run out of products we rely on,
and we can't make substitutions as easily as true omnivores (butter,
bread were two products mentioned).  Also, some food that happens to have
gluten can also have emotional associations, such as a husband's
wonderful bread recipe.

Again, thanks so much for the support, encouragement, and letting me know
that this is both common and commonly overcome.

Elizabeth