Actually, she's fishing for allies in my opinion.  She's determined that you guys, meaning the Admin team are the ones responsible for "ratting her out" so to speak, therefore she's going to try very hard to ingratiate herself with those she feels are more important, aka, the bossies.  Before I can even begin to make further commentary, I simply MUST ask, what was bossie's response to her comment? Rather than smile and nod or even a participatory laugh, that comment should have been met with at the very least a stony stare and at the most, a quietly worded comment which clearly showed that this is not, was not and will not ever be a laughing matter.

Based on what you've told us if the person gets one whif of a potential ally, it could become an "US" and "THEM" scenario very  very quickly.