Complex sentence: Doron had begun adapting a screenplay for the book in 2008, and in preparation for the film, she travelled to the Northwest Territories to research the habits and lives of the First Nations people living there.
Split into simpler sentences: Doron had begun adapting a screenplay for the book in 2008. In preparation for the film, she travelled to the Northwest Territories to research the habits and lives of the First Nations people living there.