Suggest Treatment For Brain Tumor, Mass Development In Lungs And Weakness

hello doc my mom 49 was diagonosed with breast cancer2 years back n after her radiotherapy n chemotherapy in the same year now suddenly she got some developnment of tumor in brain n mass developnment in lungs too,n by last month her again radiotherapy has been done but now she is suffering from excess weakness n very less response time.plz guide me i m in big woe...