My Sister Took My Fiancé and Now I’m Forced to Marry the Ugly Duke Chapter Completed Discussion

I didn't quite like MC who was overly nice to people who wronged her like MC. She's actually quite intelligent but when it came to her own family, it's like her intelligent was nowhere to be found. I don't like how MC decided to take her sister in considering that she had a history of snatching her own sister's fiance. MC herself didn't actually believe that her sister would really repent but she still kept that time bomb around anyway. Don't know if MC was overly confident or something else.