Medical expenses for Cancer

My sister was recently diagnosed with a very aggressive form of cancer. It was an illness that resulted in her kidney being removed. They found out, at that time, that she had cancer. The cancer has metastasized to other areas of the body. The treatment that is needed is expensive, and insurance will only cover so much. As her family, we are reaching out to ask for help. We need financial assistance, so treatment is an option! Anything will help! Thanks in advance!!