After I Transmigrated and Broke Off My Engagement with a Jerk, She Started Acting Again

After transmigrating, she became a cannon-fodder supporting female character? No big deal. Since she's already cannon fodder, she might as well make a scene, wreak havoc, and get herself killed. What? The scumbag wants to have two women at once? I'll make sure he regrets it! What? You want to break off the engagement? Fine by me! Hey, weren't you supposed to be an upright and reasonable lord? Since when did you stop acting like a gentleman? My lord,