Applications are done through the County Council. Doctors are not contacted and have nothing to do with applications now like they used to. If the council are not satisfied with the completed form they can put applicants through their own walking test so the form needs to be completed taking into consideration her walking ability on a bad day to include pain, tiredness, breathlessness, how many times she would have to stop and rest or take medication and how long it would take her to complete the distance etc. If she is successful there is a charge of around £10 and the card lasts for 3 years. Given her medical problems I would have thought she would be entitled but it will depend on the distance she enters on the form.