The White Canzer finally remembered.
It was all back at the lowest point in her life, where she was cast out of the castle and the kingdom forever.
She fled to the dark forest to save her life.
There, she encountered the Huntsman. Despite him revealing that he was there to hunt her, she was able to seduce her way out of death. She convinced him to spare her life and let her live away from the kingdom.
The Huntsman, honoring his words, gave a boar's heart to the Queen instead of her own.
The White Canzer didn't remember this part of her life because she didn't want to. All her plans, all her preparation, and all her sacrifices went down the drain all because the Queen refused to die to her tricks.
She had already killed the King and his daughter. She only needed the Queen to die for her to take control of the kingdom and make it her own.