Please help my sister

My sister Mary Anne has been through so much in the past few years. Two and a half years ago she was by her husbands side as he suffered through his treatment through the VA. He was a Vietnam Veteran and was so ill. She did not leave his side. I went there to try to help her through her pain. Joe passed on July 16,2019.
 She has struggled through losing him. I understand her pain totally. We have been each  other's rock for the past few years....no more like through out our lives but even more through our losses. She has recently been diagnosed with cancer, She will go through an extensive surgery and Chemo and radiation therapy. She will definitely need help with medical and household costs as she goes through this. I plan on being by her side as much as I can through this.  Please help in any way you can. Any amount will be appreciated. I always try to help others and hoping now you will help my sister.