Dear Sir,my Mom Have Breast Cancer.we.according Doctors Advice Given Temoxofen

Dear sir,my mom have breast cancer.we.according doctors advice given temoxofen 20 mg.after a year it spreads to bone.she can' t able to walk.thereafter doctor given rediation to hip.she went on loosing weight.now from breast bkood is bleeding.she had seviour pain all over the body.now we are giving letroze2.5 mg.(1-0-0)levozen z(1-0-1) daily.she had sugar,cardiac,weazing.in this condition how long she servive.now she is 85 yrs.please suggest thanking you.manjunath.