She was given just 6 weeks to live in August of 2016.
Speaking of taking cannabis oil, which she describes as being like eating 'thick black tar' mixed with olive oil, Ms Smith said:
'When you're told you have six weeks to live you'll try anything, trust me.
'I was a bit sceptical about the oil at first as I'd never taken drugs or anything like that - but I know I would not be here today without it. I want to tell everybody.'