Suggest Treatment For Weakness And Discomforts In The Leg After Chemo Radiation Treatment

my 77 yr old mother has had chemo and radiation treaments. 6weeks later she is so week, she cannot stand on her legs. she was very active prior to therapy. her meds consist of compazine and a steroid for back pain. she was diagnosed with osteroporosis and had her cracked 2 vertabrates.prior to the canceosr diagnose. does not complain about any pain.wat can we do to get her on her feet. are the meds partof the cause. should we ween her of these? please help we are using hospice so its difficult for pro info