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.
Authors, if you're planning to run a Kindle Countdown promotion, do not expect a dramatic increase in visibility on Amazon. There are already thousands of Countdown deals running. To stand out from the crowd, you will need to find other ways to inform readers that your book is on promotion.