Denise's medical care and expenses

Denise was diagnosed in 2008 with advanced ovarian cancer. She has had many surgeries and many rounds of chemotherapy since her diagnosis. Because of the treatments she has had she is constantly stuggling with health issues. She is now facing another major health crisis and possible new cancer diagnosis. Much of the time while being sick she has no food, no gas for transportation, no money for medication. Eventhough she is on disability, it does not begin to cover her expenses. Family tries to help as much as possible but cannot bridge the gap.  Our mother died of ovarian cancer in 1993 and Dad is elderly and disabled after being hit by a car in 2016.  Denise's car broke down this week .They do not have a washer as it broke down 3 weeks ago. If she gets another cancer diagnosis she will have to go back and forth to Charlotte.The situation is so overwhelming, there are no words to explain it all. For years I have tried my best to take care of her but I am exhausted both financially and emotionally.   We wish to give her a tiny bit of quality of life as she faces this new challenge. As her sister I want some happiness for her. I can't imagine being that sick and having the stress of no money. I have also had ovarian cancer but was lucky to catch it early and only had 6 months of chemotherapy. This situation is heartbreaking and upsetting. I try to help as much as I can but I am caring for our Dad and my Mother in law so I am spread very thin.
          Medicare does not cover all of her medical expenses so she often has to delay going to the doctor because she does not have the money. She doesn't tell anyone she is sick because she says she does not want to be a burden. She is to have tests run next week and does not have the copay.
         Getting the car fixed is an urgent need so that she can get the care she needs. Proper food and nutrition is an urgent need as well.
        My sister is my heart and I am appealing to anyone who could help so she can have some simple things to make things easier for her.  
         Also In the event of her passing there is no money for final expenses. She worries about all of this. I just want her to be happy for a little while.