Philippa Boyens — New Zealander Writer

Philippa Boyens, MNZM, is a New Zealand screenwriter and producer who co-wrote the screenplay for Peter Jackson's films The Lord of the Rings series, King Kong, The Lovely Bones, and the three-part film The Hobbit, all with Jackson and Fran Walsh... (wikipedia)

It is hard to go back into a world that has already been explored, so to speak. And the fans are very passionate about it, and you don't want to burst that bubble; you don't want to break that illusion. You want to get it right. You want it to feel familiar, but also surprising.
As a screenwriter, you have to let go, and you have to hand your baby over and let it go off into the world, which is entirely appropriate.