so what exactly are the rules? This story has more information than the previous one which is why I decided to post it.

As long as we're on the subject why was this post of mine https://news.ycombinator.com/item?id=29275416 flagged and this one to the exact same url https://news.ycombinator.com/item?id=29286088 posted 8 hours later not marked as a dupe?

The criteria we use go like this:

* if a story has had significant attention in the last year or so, reposts are treated as dupes (https://news.ycombinator.com/newsfaq.html)

* for a major ongoing topic, deciding whether an article is a new story vs. a dupe of the old story boils down to: does it contain significant new information (a.k.a. SNI: https://hn.algolia.com/?dateRange=all&page=0&prefix=false&so...)

* the main thing we care about is: can the new submission support a substantively different discussion than the previous ones?

By those criteria I suppose this is borderline, since (I'll take your word for it) the article contains SNI, but (on the other hand) the discussion will very likely be generically about the original stalking story rather than substantively different based on the new post.

This isn’t the same story. I don’t think it should be marked [dupe].