The most important rule in "Miraculous: Tales of Ladybug & Cat Noir" regarding the character Chloe Bourgeois is about understanding her journey and the concept of redemption. Chloe starts as an antagonist, often showing jealousy and entitlement. However, her character arc emphasizes the importance of growth, empathy, and the ability to change.
In terms of a "broken" Chloe, it could refer to moments where she confronts her flaws, faces consequences for her actions, or has a significant emotional moment that prompts self-reflection. The key takeaway is that everyone has the potential for change and that understanding and compassion can lead to personal growth.
If you're looking for a specific episode or storyline regarding Chloe's character, please clarify, and I would be happy to help!