Really feeling for your daughter!
The first thing I would advise is to be in touch with a professional. (Like the Wellbees team, for example) They deal with many many cases and have years of experience that can help to guide you personally much better than any forum can. It's worth the price(take it from someone with experience...)
That aside, I think that the max on the intro diet is 5 days so I would definitely say to move on from there already.
Also, another mistaken belief with the diet is that by eliminating all "bad" foods, you will achieve results! Although some may be cured by avoiding certain foods, many will need more than that. Besides eliminating harmful foods, you need to eat healthy, vitamin and mineral-rich foods. Bone broth, for example is a must! I'm two years on the diet and feeling basically fine, yet drinking bone broth still gives me that boost! It's a real game changer. It populates the gut with healthy nutrients.
Another thing to be careful of is not to mix fruit with protien, and to wait 1/2 hr after eating fruit before protein, and 2 hours after protein eat fruit. Combining the two causes gas and irritation in a sensitive stomach. Also be sure to drink a lot of water, and to eat slowly, chewing well, and not to overeat.
A HUGE part of the "diet" is to work on stress-management. Since the mind is so closely linked to the gut, healing your stress does your body wonders. I've heard of countless people who've had flares from their stress, and who managed their symptoms by removing the stress. (Though it's easier said than done. I think this topic was brought up elsewhere on this forum)
I would advise to speak to a professional asap, but until you do, here's some mild (and very nutritious) menu options:
Have a glass of warm water with freshly squeezed lemon juice first thing in the morning. It aids digestion and has anti-inflammatory properties. (Also boosts your system with hydration)
fresh ginger juice also helps inflammation, as does honey (preferably raw, FILTERED) - combine them in hot water to create a delicious, healing tea!
Have a large fruit smoothie in the morning with ripe banana, papaya, and bartlet pears - all have vital nutrients for your gut and are very mild
homemade Applesauce is also great!
Cashew Muffins (wellbees recipe) - these are quite mild, and provide neccesary nutrients.
butternut squash (cooked and pureed) - you can make into soup
Kabocha squash is also very mild and quite delicious! My family thanks the SCD for introducing us to such a delicious squash! (It tastes more like potatoes...)
Fish - cooked/baked white fish with mashed kabocha or avocado is really good!
Chicken - cooked is better
Chicken patties - from the wellbees cookbook Chicken ball recipe (but omit or steam the onions since they are not easily tolerated)
Eat 3 cups of bone broth a day, but in the beginning try to skim off as much fat as possible - I think fat is bad for loose stomachs.
Again, I'd strongly advise speaking to a professional. I only posted what I did since I know the feeling of waiting without any direction for even one day in pain, and I wanted to help you avoid it. A professional can help you a lot more than I can.
Good luck and feel good!