i was fully expecting this chapter to be a return of the Villainess system… and, like, the longer it stays dormant, the more paranoid i get about how it will return
Same. IIRC, future!Elsa banished it, but I got the impression that it was a temporary measure. I'm still curious what the system actually IS, exactly. Where did it come from, and how does it work?
It's unclear if the system has a consciousness behind it. It could be sentient itself, be under the control of a sentient being, or be fully autonomous. In the latter case, it's possible that the plot has gone so far off the rails that it won't be able to function properly (this may or may not be a good thing). In the former cases, though, it will almost certainly be QUITE unhappy with the current state of Yvonne and Evie's relationship.
In any case, Yvonne should probably warn Elsa about the system before it comes back, because she won't be able to talk about it after it returns.