Could it have been the male leads? According to the novel, Hera's death and her family's downfall happened after the male leads teamed up to take on the Avery family. They eventually defeated the ultimate villain, whose boundless ruthlessness posed a severe threat, particularly targeting the male leads and especially Alice.
But no matter how hard she thought about it, she couldn't understand why the novel portrayed Hera that way. It seemed as if Hera's intelligence was deliberately lowered to cater to the victories of the female lead and the second female lead. Was the Hera in the novel really that naive and overtrusting? Or was her perspective altered because of Athena? Athena played a significant role in these changes, teaching Hera what she needed to remember, how to think strategically, and how to stand firm when dealing with people.