Like 'Metro' and 'Motor,' 'Troublemaker' is written in first person. The only narration that happens is Barney speaking to the reader/thinking in her head. First person was a big challenge in the graphic novel because we want both men and women of all ages to enjoy 'Troublemaker.'

'Troublemaker' is not an adaptation of 'Metro Girl' or 'Motor Mouth.' It is an original story. The hardest part was probably trying to keep the sound true to the novels. I always write in first person, and it was important to us that the readers of 'Metro' and 'Motor' be comfortable with the change over to a graphic novel.

Ageing is something that both men and women are utterly terrified about.

When you fight, anger drives up testosterone in both men and women.

I'm very definitely a woman and I enjoy it.

If men knew all that women think, they would be twenty times more audacious