T., my younger son is now 18 mo. He was born w/ allergies to cow's milk protein and soy. He was breast fed for the first 3 wks. until his allergies were actually diagnosed. He had been hospitalized twice before turning 2 weeks old. The second time was at Boston Children's Hosp. where he was given an endoscopy. The endoscopy showed that he had severe colitis caused by the allergies. He had lost a lot of blood through rectal bleeding. I wanted to continue breastfeeding, so I went on an elimination diet to rid my system of dairy and soy. It was fairly easy to cut out dairy, but SOY is in nearly everything that "has a wrapper on it."
It turned out that his allergies were too severe for breastfeeding and he was put on Nutramigen. I introduced solids at 6 mo. and he did well. I was told to use Beechnut products, as they do not contain soy. At 12 mo. he was retested for allergies to dairy, soy and egg and he tested normal for all. I started him on cow's milk and he had no reaction, thankfully.
Is it possible for you to get your daughter a gastrointestinal evaluation? I LOVED the GI doctor at Children's. His name is Dr. Glenn T. Furuta. Maybe you could get a referral from your pediatrician.
Best of luck to you and your daughter,
S.