@jslblaze I mean, her bad reputation is at least partially centered on how she violently assaults the prince's lovers. So the fact he's running to the arms of other women is likely well known, but the blame is probably placed on our girl. Especially since it was compared to a similar scenario in the mc (and possibly author's) experience in Korea where people blame the wife for the husband cheating. The fact that the prince intentionally summons her to witness the affairs in order to be entertained by the catfight beatdown that usually followed is not widely known.
At this point (pictures of the prince permanently stuck all over her room) I'd just set fire to the room and scream 'evil thing begone' just to get the point across.