That was such a fucking turn for the story to take in the last page LMAO
I don't like it even but I do respect it. I kind of love it. Pulling the "kill a man and steal his wife" gambit when the man is HER FATHER
I don't even know if it was a turn... I think she laid it on thick reminding us about the daffodil poisons, but it was definitely setup from the start. Chekov's gun and all that, if the author is telling us about the daffodils's poisons and then the kimchi fried rice using chives.... The daffodils are definitely going into the kimchi.
You could really feel her descend into madness though, completely oblivious to Sumire's despair...