You have to look past the surface of things. The mom was trying to protect her daughter from scrutiny and further…
The mother represents the old thinking way of dealing with this issue. She worries about "reputation/face", what people will think of her daughter or the family after they expose the rape. We all know this is a wrong and damaging thinking for the victim. She needs justice otherwise it will destroy her.
QN is such a good husband to YSB and understood what she was going through because he was a victim before - even though it was a different crime. He knows the impact and the mental damage it does to the victims.
https://kisskh.at/list/3WW5oRl3