So basically the mother and sister were framed by the blonde queen and her family (it was mainly the brother doing it cuz he wanted the blonde queen to be happy) and then they were imprisoned and the emperor didnt do anything and eventually they jumped off the tower cuz of like humiliation or soemthing
If im not mistaken.. They suicide because at some point they lose hope that they would get out of imprisonment.. Because the emperor at that time also did not have much influence.. He had a hard time trying to solve the issue.. As they spend more and more time being imprisoned they started to lose hope n thought it was better to die rather than later finding out that they were abandon and forgotten..

What caused the ML mother and sister to die, and why??? Confused, and lost because I forgot.