M.R.
My first suggestion is speaking with a nutritionist. They should be full of nutritious ideas and very helpful with your difficult meal planning. I would imagine due to her current low interest in food, you need to offer calorie dense foods like bacon, steak, lactose free cream on the pasta.
Have you tried much ethnic food? I think Korean ribs called Galbi (or Kalbi) or their Bulgogi's, which essentially are meats marinated in terriyaki flavors, a little different though, would be tasty for her.
Also Indian curries over rice would be an option. They would be spicy and colorful and tasty.
Does she want spicy food all the time or just as an exploration exercise?
I had a family over recently who's daughter has autism and she loved a red cabbage salad made with the raspberry salad dressing from the refrigerator section. I had to make a second bowl b/c she ate most of it.
It is just finely sliced red cabbage tossed with the dressing. My kids love it too.
Also, she loved my fish cakes.
1 package imitation crab meat, shredded
1 egg, beaten
1 T flour
2 green onions, finely sliced
Mix altogether and drop by spoonfuls on preheated, slightly greased pan. Flip like a pancake. Loaded with healthy protein and warm.
What about Chicken Mole? It has many of the ingredients you listed above? Try this slow cooker one:
http://allrecipes.com/Recipe/Slow-Cooker-Chicken-Mole-2/D...
GL!