hydrogen peroxide question

Hello I have a question about my 54 year old mother who has inflammitory Breast Cancer and has received 2 doses of chemotherapy so far. I purchased 35% food grade hydrogen peroxide and advised her to put 1 pint into her bath water and soak for 1/2 an hour, i was wondering if this will be harmful to her while she is doing the chemo. please help me to save my mother from the cancer and poisonous chemo. Tweet