Trying everything possible

My Sister In Law was diagnosed with mouth cancer back in July & was operated on but recently has been told that it has Metastasised to the brain stem, there could be a treatment as well as Radiation & Chemotherapy but it would cost £2000 & I would love for my wife to be with her Sister & to be able to pay for the treatment. I sadly being on a fixed income due to Disability cannot afford this  & feel helpless to help & would love to send my wife to her sister.If you could help it would be fantastic as it may be the last time she sees her alive.