you might be right!
well I hope so..cause that is one of not so many good reasons her dad could've had for doing that
From what ı read spoilers his Father being brainwashed from temple
omg where did u read the spoilers??
https://forum.novelupdates.com/threads/i-became-the-male-lead%E2%80%99s-step-mother-%EB%82%A8%EC%A3%BC%EC%9D%98-%EC%97%84%EB%A7%88%EA%B0%80%EB%90%98%EC%96%B4-%EB%B2%84%EB%A0%B8%EB%8B%A4.115415/ the total pages 15 right now start from the first Page. from the People Who read the novel there is everything you want the see (▰˘◡˘▰)
Thank u sooo much ε=ε=(ノ≧∇≦)ノ
Maybe that was the reason why her dad fed her those meds in the first place!!!!!!!
http://www.mangago.zone/read-manga/i_became_the_hero_s_mom/uu/d_chapter-31/pg-8/