Hello friend, There are no leukemia cells produced in the bone marrow. What are produced in the bone marrow of your cousin is white blood cells called leucocytes. When the cells are abnormally multiplied or produced more to find abnormally increased number of them in the blood we call the condition as Leukemia. Body is producing this condition in order to save the individual from certain conflicts in the mental level which very often go unnoticed. I am a Homoeopath and my advise is to approach an expert Homoeopath at the earliest. He can take the case of your cousin in a detailed manner and understand the life situations of your cousin and how he or she reacted to them. In Homoeopathy, we do not treat the disease but we treat the individual. Once the individual is treated, her disease condition will be corrected. My best wishes for a speedy recovery through Homoeopathy. Dr. C. J. Varghese Homoeopath drcjvarghese@gmail.com