I think that might just be the angle. She's nowhere near as "fat" as any of the gravid snakes I've seen here. She shed two weeks ago and apart from still eating, she does behave like she's gravid.
Didn't somebody get a surprise birth a few months back?
Edit: Was that you, Esther?
Why can't these snakes just have a clear and unambiguous way of showing that they are gravid?
They could grow a large hook on their lower jaw and turn bright red, or something.