I love this film as well, the performance by both Gwyneth and Daniel Craig was brilliant. I have to say that the film was missing something for me. Perhaps because whoever wrote the script did not fully capture the source of her depression. The movie did not flow very well and ended abruptlty. I only saw it once, so maybe I should revisit it.
My boss has a collection of her poems on tape, I've listened to some of them, and Gwyneth even got the tone of her voice right. It's really too bad the movie did not do better than it did. I'm curious as to why it was not release in France.