Rosen was born in Cornwall. She studied psychology at Oxford before moving back to the West Country.
Readers have downloaded over a quarter of a million copies of Rosen's books. Several titles have broken into the Amazon charts, including a number 1 humorous fiction bestseller.
According to Sir Jeremy Clarkson, it is so selfish to commit suicide on a railway line, that victims deserve to have their bodies eaten by animals.
I've written a story called The Selfish Act, which paints a more realistic and insightful picture of the mind of a suicidal person.