It's funny that there are so many people who are eager to say 'Nay' to a Twilight anime but I don't think Ms. Hardwicke was serious about the series coming to fruition. In her conversation with Robert Pattison, I think that the audio commentary was just those guys joking around. Even coming from Mr. Pattison comparing himself to an anime character, he probably never got the chance to see an advance screening of another Canadian resident who tried his best to represent another popular anime character but failed. Chatwin, I'm looking at you.
There won't be Twilight anime unless there are some preliminary character sketches or any announcement from any of the major anime distributors in Japan about it. So let us not worry about little things such as this and rest easy for a sec. Only three more years until the movies are over and, in my opinion, the original author of the Twilight series might create another book series that deals with more interesting characters than Bella and Edward. Then again, she could go the J.K. Rowling route and create a book that has nothing to do with the original characters from the main Twilight book series but was mentioned in one of the books.
I mean we have other things to worry about like the economy, global warming, Sci-Fi Channel changing its name, Dora the Explorer becoming a teenager, etc.