I suggest Re-reading all the manga chapters as the early chapters show how Ronai in a different way was abused by her family in that Ronia was made to keep quiet and endure everything her family put her through.(〜 ̄△ ̄)〜
And the only reason she put up with it for as long as she did were two factors I will mention later. (⊙…⊙ )Ronia she was NEVER allowed her ANY free time to play like a normal kid. In fact when asked to be allowed to play or have some time off from her studies Ronia was slapped by her mom and was scolded by her brother who demanded Ronia apologize to her mother. (╬ ̄皿 ̄)凸
In addition once she was able to her mother started having Ronia take etiquette for the preparation to become a 'wife' of the prince. And tried to enforce upon her it was her duty and obligation as a woman to become engaged and do the things Ronia was required. (/TДT)/ Further more she ( along with Ronia's dad and brother) was always expected to be at the top at her class which made her work extra hard to meet her family's expectations but in the end was NEVER praised by her parents or brother when she worked on her subjects and only treated it as that was the norm for someone of their house. (Despite how hard she worked for her grades) ╥﹏╥
This was a fact was known by Schneider (and Ronia's friends) which makes his actions all the more infuriating the only reason why Ronia put up with it was because of her grandfather's visits as they were the ONLY times she was given free time and Schneider. Which is why when Schneider broke things off with her she immediately felt free as she had nothing to hold her back from staying.(๑•ㅂ•)و✧
In short if her mother was punished it was probably the method of her 'training' and 'upbringing' and the fact that she treated her daughter as a tool and never truly cared or cherished her like a proper mother should and would.(▰˘◡˘▰)
So the ex fiance is just a big ass shit, same goes to her brother. Her brother would find her first and mf didn't even hesitate to shame her when they just met and after that there were no mentions about that bastard anymore. As for the ex fiance, he'll eventually find her too but mf didn't APOLOGIZE HE WENT AHEAD AND BLAME EVERYTHING THAT HAPPENED ON HER LIKE "WHY DIDN'T U TELL ME IT WASN'T YOUR FAULT, WHY DIDN'T YOU DEFEND YOURSELF, LET'S GO BACK TOGETHER" HE HAD THE AUDACITY TO ASK HER TO BE TOGETHER AGAIN AFTER WHAT HE'S DONE but it's fine cuz mc will lash him out by saying hurtful words it may not be enough but seeing his hurt expression is cooling my anger for like 1%. Oh and as for that bitch ykno that stupid bitch all of she got busted for the things she did and she'll get exiled or maybe it was imprisonment? But what i remember she was given two choices imprisonment or work at riona's cafe , ih and as fore her mother she'll be punished too but it wasn't specifically mentioned what type of punishment it was