Call Medicare if your of that age.... you can protest a discharge and usually get a day or two out of that even if you lose... after 3 days in hospital with Medicare you get up to 100 in Rehab. I am sorry to say this but CHF is usually not good.... watch meds and check the fluilds they gave ... even in ambulance they could have put her into CHF.... with CHF comes kidney failure...usually.... ask from blood levels of BUN and Creatine.... and a kidney ultrasound.