Can you tell me if your daughter has Thalassemia Intermediate? Did she had the children prior of being a JW? The reason I' asking is that people with Severe Thalassemia are hard to born children. Usually hemoglobin is stable, but if there is a decrease on Hemoglobin then she will have to take medication to increase it. I know she will not accept blood treatment since she is a JW, but she must have alternative medication immediate. I don't know your location but in my parts of the world (Greece) Thalassemia was common for many years. Have a look at the links bellow:
http://www.thalassaemia.org.cy/
The main reason is the abnormal marrow function and the cure is a marrow transplan. In order to face this she must take a combination of vitamins(appart with other medication) in order to help marrow to increase the production of red cells, since this is the issue with people suffering from Thalassemia.