How many movies have Amy McLennan and J. R. R. Tolkien collaborated on?

They have worked on 2 movies together! Their first movie together was The Hobbit: An Unexpected Journey (2012) while their highest rated movie together was The Hobbit: The Desolation of Smaug (2013). They have not worked together since The Hobbit: The Desolation of Smaug (2013).