Please help add 10 months to our mum's life

Hi there, my mum's name is Debbie. She is my best friend and the heart and soul of my family. In August 2016 our mum was diagnosed with stage 4 metastatic incurable breast cancer. This cancer has made its way throughout her body and into her bones, this unfortunately means that it will take her life at some point in the future. My mum has raised my sister and I by herself for many years and in October 2017 my sister, Monica, had spinal surgery. Unfortunately this went very wrong and she is currently undergoing intense rehabilitation. It pains me to think that my mum won't be able to see my sister recovered.

This treatment will allow my mum's body to not be able to build up a resistance to the cancer treatment she is currently receiving. It will prolong her life by 10 months. Please help us have this extra time with her.