Here's a retracted(?), long read about what Lana was going through at the time the sequels were being made. It more or less details her coming to terms with her gender identity during the production, and blames weaknesses of the films on her being distracted.
If anything this article is interesting just to see how differently people thought of trans issues in 2006. The article obsessively makes connections between gender identity and sexuality
https://web.archive.org/web/20060115061830/http://www.rollin...