I don't think Shan would see any need for dark side. That doesn't seem to be part of her character. I also think that if you explore your reasoning in any depth it falls apart because it's a huge stretch and there are a multitude of easier ways to meet the same goals which I think are also a reach, but you seem to have your mind made up, so.... I'll just say that I've done a lot of writing so I'm not just talking out my arse. This plot has big problems. They also take what is arguably one of the more interesting events in Shan's life and makes it purely political when there are much more interesting posibilities to explore.
Sure I can remove that part but I do think Satele at least share some thoughts with Revan, at least after she met him.
Never played Republic so I'm not sure how did they interact.