Pandora's experiment to create a candle out of thin air already lit goes terribly wrong

Before her daughter's fall, the last thing she said to Helena was the indication for the Cruciatus curse. After he daughter's fall, she goes on a quest to do something to reverse her regrets. Takes place in the Founders era

After the death of her mother and Cedric, Luna Lovegood learns about grief

Luna Lovegood learns about the outcomes of death, after grieving from the death of Cedric, one of her closest friends, and her mother.