Maybe take that rice and cheese casserole and change the mushroom soup up for tomato sauce for a change, and spice it to be Italian-esque? (She usually eats spaghetti just fine.)
And well, when she's not having the squirts, we do get plenty of fiber; whole wheat bread all the time. White bread is ONLY for if you're sick to be honest.
Oh and when she's sick, she eats a lot of Ritz crackers and cheese. Would you believe cheese kinda stops you up?