If you put together the backstory they've been putting together for a while:
- Iseop's aunt (who died) and uncle (mom's brother) were in a contract engagement.
- the aunt fell in love with volleyball player abandoned Iseop's uncle, and ran away to the US.
- the uncle actually loved her so he was heartbroken and ran away to become a teacher in a rural city
- To keep the uniom contract between the two families, Iseop's mom was forced to throw away her dreams, career and life to marry Iseop's dad
- Iseop's dad is absolute trash who cheated on hos wife, the biggest affair was the one in the flashback where he cheated with his secretary who latee blackmailed for a lot of money. Iseop's mom had to clean all that sht
So she despises people who fall in love and ruin those around them, and people who live on their impulses like lust without consideration of others

Yo I'm dumb what was the family drama in ch 93 someone pls explain