Freezing Chicken Spaghetti?

I would bake it and then freeze small portions in Ziplock freezer bags. Then your mom can allow one or two servings to thaw and reheat gently in the microwave to serve. If you emble, freeze, the have her thaw and cook the meal, she then has to divide up the leftovers and refreeze them herself. If you want to be helpful, go the extra mile for her.