First off, yay new chapter thanks for the scanlation!
Second: i like that we get a view into why she is a bit yandere. And it ultimately makes sense in the context of this world. In a world where it's 5 women to 1 man, this would easily magnify the feelings of inadequacy she would feel. And it would also make sense within the rules of this world that she would highly treasure and guard jealously the little bit of affirmation and affection she gets. If you spent your entire life being rejected for someone else, and you finally found someone who was able to look at you, the feelings of wanting to hold onto that make a lot of sense.
So like, I get her. Shes a good girl, and i can understand her feelings. Even if i may disagree with them.