Thanks for sharing about your problem, it is the first step in getting your little girl to get better. Firstly, the anaemia
would partially explain why she barely has the weight for her age. It is important to find out the cause of the anemia
as this would need to be corrected. Usually the reasons are simple and easily treated BUT you would need to take her for further examinations. Please do not be afraid as the cure is not more scary that the possibility that your little girl will continue to suffer from a condition that can be easily treated.
It would be useful if you could post a pictureof the enlarged rib cage
as you call it. It may even be a sign of rickets
or could be a normal variation. If you could post a picture, i would have a better idea. Please revert back if you need any clarifications.
Dr Antony Robert Charles