I try to make films where the audience forgets the filmmaking and gets engrossed in the story as it unfolds. I don't want them to ever feel bored, or that they're being told what to think, or to feel depressed. I don't like films about victims - I want to celebrate brave survivors like Brenda and the wonderful women in the film.

The biggest misconception about me is perhaps that I film all the time and film everything randomly. The truth is I film very little and always when something excites me and seems to mean something for the film.

The magic of documentary is that I keep being surprised and amazed by the things I film.

I know that sounds contradictory - you're going on a journey, but once you know who your characters are, you become more disciplined and you film less and less.

Personally, I don't like watching films about victims - people where you're meant to think, 'Oh, this is terrible,' and you go home feeling really depressed.

I meet all these American filmmakers that film for months and months, and it's a mystery to me. I couldn't make a film like that. I have to be very clear in what I'm doing and where it's going, and be very disciplined about what I film.

I don't have any advice at all. I think we all make the films that reflect the kind of people we are; we all make such different films. There's not just one way of doing it.