Treatment costs for my Mum

It will soon be 2 years since my Mum was told she had terminal cancer (4th stage metastatic colorectal cancer).
With amazing determination and a lot of very expensive complimentary treatments she seems to be defying the odds.
Whilst her complimentary treatments have been very effective in reducing the size of her tumours (there is still a long way to go) as I have already stated they are very expensive.
My Mum and Dad have run a small but fairly successful fruit and veg home delivery business for quite a few years,  but for the last 2 years my Mum hasn't been able to work in it. That, combined with the fact that alot of my Dad's time is taken up in looking after my Mum, the business has suffered.
It has come to the point now that supply of the very effective complimentary treatments is in jeopardy. Dad is barely scraping together living expenses and his health is also beginning to suffer as a result of trying to keep everything going.
My parents have always dropped everything to help others in need, but unfortunately they are not type of people to ask for help when they need it.
I'm humbly asking on their behalf for any kind of help that people can afford to give them.
My family will be deeply grateful :)

Love, Kate xx