When my daughter was young, she would periodically get these unexplainable stomach pains. I took her to doctors again and again, but they couldn't figure it out. Once we ended up in the ER, as her pains seemed to indicate appendicitis. It wasn't.
Fast forward many years, and one suggestion by her grandmother, and we found out the trouble. Red meat. She cannot eat it. We eliminated it from our diet, and she has been fine since.
So, how do I cook dinner without red meat? It wasn't easy at first. We ate a lot of chicken. That got boring after a while. We tried veggie meals. Interesting, to say the least. But in the last year or so, we have come up with a workable (and tasty) variety.
I make meatballs, meatloaf (yay! mini cheddar loaves!), 'hamburgers' and even lasagna can all be made with ground turkey. So can tacos, spaghetti sauce and grammommy nachos. I tried it in chili, but didn't work. (that's okay..she doesn't like chili, so when she's gone for a few days, I make chili the regular way).
We do make a few veggie recipes, including a great veggie lasagna, and black beans over rice.
When I have a desparate craving for red meat, I cook up a steak (hey, why not), and she cooks up some fish (bleh), and we share the side dishes.
So, problem solved, deliciously!