My question is
Why does she call him father? If I were her id just call him "My lord" since in the past life Id probably call him "villains name's father"
@nobodygattaknow because in the books she read in her past life he was a side character known for being literally, the villains father. In Korea people often refer to others by their “positions” such as calling someone Teacher, Manager, etc without using their names. She was used to calling him Father in her head so it probably just slips out