Zyn's feed

Wait, did she just sacrifice people (slaves) just for character development of the ML? Why do I feel like she treated everyone as just book character aside from her family? Specially the ML, why would he need to be angry first when he has already his abilities? Why didn't she just talk it out and I'm sure the ML would understand her plan. She just discarded the ML after building his life, now she's getting angry to him for being obsess when In fact it's her fault? Huh...