True but I feel like her entire plan was to make her mother suffer like make her pay for killing her brother and her friends and have her suffer humiliation and make her rot in jail for committing such crimes yk? Cuz like from the story she’s just been going crazy as the story progresses so determined to reveal her mom as the murderer that ig she just couldn’t end up with a better plan for her other than to die and pin it on her mom
you're missing some things. The mother has a huge reputation and pride in it and a very successful career. She loves her daughter (because of how similar she is or how she has determination in her eyes , idk) and does not want to loose it or even slow it down. (killing two family members because of imperfections and slowing down her career) now what do you think will happen when her own daughter gets killed and she is the murder?
She will firstly get in jail, yes but MC knows the mother will get out. But what about everything else? Her daughter that she wants to watch over to feel alive (shown in her arc) is dead. Not only that, she is being accused of killing her. Her Career and reputation are down the drain. You can't be a chemist when you killed someone. Everyone will rumor about the murders before even if there is no evidence the mother did it. Because if the daughter was killed why would the first two not have been killed too and they just didn't notice it? The mother will have nothing to her name. She will have to live under her parents. And seen in her arc she has no live of her own in which she feels fulfilled. She will have to rott in someone else's house while having to rethink what she did.

spoilers…
Latest chapter: I’m conflicted on her plan to just kill herself, all this work, all this effort for what? to lock her up even if she may get out eventually? I feel like at that point i’d just kill the mother and then myself or just kill her and run away idk