Enjoyable, even if she wasn't really a villainess by any metric (at least in cases like chapter 2 of volume one people thought she was bullying her sister). Prince here certainly isn't likable, but I'm willing to give him a relative pass given how the fiance saw through his bullshit and made him suffer for half a year (which he most assuredly could have ended early if he owned up to his mistake sooner). This sort of behavior isn't really okay, but it didn't seem to bother her and she saw through his bullshit so eh. I'd rank this prince on the 'harmless' side of the awful scale out of all of the princes we've seen thus far, which I guess means that the prince from the 3rd chapter and the good prince from the 5th chapters are the only ones I'd say are better than this guy, out of the princes from these stories.
Also glad to see this come back, these make for nice little stories most of the time!