Hello SS---I also think that it may take time for your daughter's digestive system to learn how to digest these different foods. If you were breastfeeding, you were actually providing her with predigested food. I hadn't realized that until I started working with a number of pediatricians in my wellness business.
A little background about me. I have been a student of wellness for over 6 years now. I had come to the realization that my health is up to me. The current medical system is better at fixing things (sometimes) rather than prevention. I'd rather take control than be a victim to my genes and our environment. So, I am taking a series of wellness classes taught by a Naturopath who has her PhD in Nutrition. Here are some ideas for you based on what I am learning.
First, I have the honor of working with Drs Bill and Jim (ABC The Doctors) Sears. Dr. Bill has written a number of books. At this point, I would recommend you get the Family Nutrition Book. I'd be he also has some advice on his website, www.AskDrSears.com.
Foods that are good in helping to alleviate constipation: from the 'Healthy Food Directory', bananas (yes, I know...most everyone tells you to use these for the opposite problem...I fed my husband bananas and kiwi with a bit of agave nectar when he broke his hand and his tylenol 3 caused constipation...it WORKED!), dates, garlic, kiwi, water and whole grain breads. Black licorice is a good laxative. Tofu is also mentioned as being useful for constipation. I have some great recipes that I could share. You could make scrambled 'eggs' using tofu.
Another book shares that a glass of warm water first thing in the am stimulates gastric juices and has a mild laxative effect.
I have a couple of hand-outs I can share so be sure to contact me if you'd like those. Can't attach them in this forum.
I work with a company, as do the Dr. Sears, that makes a whole food supplement, made of the dehydrated juice powders of 17 different fruits, veggies and 2 grains. One of the first things people mention when consuming this is that they become more regular. Since it is in powder form, a bit can be mixed in with your daughter's food and will likely help to train her bowels.
Be patient. Keep offering lots of fluids and a variety of foods and her body will soon realize what it is she is supposed to do. When my babies were little, I would often spend time with them in my lap, head by my knees and I would be sort of pumping their legs when they seemed to be having problems with bowel movements.
If there is anything else I can do to help, I would be honored to do so. Good luck! In health, D. ###-###-####