Chise makes the only deal she believes she can make, not just to save Stella, but her own life as well. That deal puts her in the lion’s den, and Joseph, the lion, makes it clear he still hates her, even if he’ll honor the deal.
The process starts with the two swapping eyeballs—a particularly icky sequence—and when his body doesn’t reject it, he prepares to remove her cursed left arm.
While Chise was awake for the eye-swap, Joe locks her in her memories for the next phase—childhood memories she thought lost forever, in which she and her dad and brother were together and she was a normal, well-adjusted girl.
After painfully bittersweet images of their nearly perfect family life flash by—among them her dad fighting off some kind of demon or faerie—a form of Joseph appears that isn’t so much Joseph, but the piece of him that has now made itself at home in her body—his eye.
One night, the perfect family situation dies. Chise’s father gets out of bed with his infant son, walks out the front door, says goodbye to Chise, and never returns. One could explain his course of action as cutting his losses—perhaps having had enough of living with two Sleigh Beggys—and perhaps he simply did what he felt he had to in order to protect his non-Beggy son.
Whatever the reason, it’s a huge betrayal, and Chise’s mom cannot make up for her husband’s absence. That doesn’t mean she doesn’t try: she works any and all jobs she can to scrape by, but because so many monsters are attracted to her no one else can see, she cannot hold those jobs for long, and she slowly drowns in debt.
Like Chise, her mother had a frail body, and when keeping up with everything simply became too much for it, her mind snapped as well. In a moment of weakness, she listened to the voice that told her it would be easier if Chise weren’t around.
She chokes Chise awake, telling her the words Chise never forgot: “I shouldn’t have given birth to you,”, but in this context she isn’t talking of Chise’s inadequacy as a daughter, but the fact that she exists at all. Her mother knows that her curse is her daughter’s curse. It’s more an act of misguided mercy and desperation than malice.
That’s why her mother snaps out of it before she kills Chise, and overwhelmed by shame for what she tried to do, throws herself out the window. After that day, Chise forgot everything that came before, and it was the genesis of her belief she was worth so little even her mother regretted having her.
But that villainous mother, devoid of the context of her torment or the lengths she went to to keep their family of two together, was nothing but a creation in Chise’s mind. Her real mother didn’t really wish her dead; on the contrary, she decided she’d rather die than live on knowing she even made the attempt.
Chise breaks free of this vision of her mother as the real one, and says goodbye before letting her go entirely in a dreamy field of flowers. She even goes so far as to thank this false artiface of her mother, as she was the reason Chise ultimately ended up meeting so many wonderful people, among whom she still counts Elias, despite what he did to Stella.
With her “dark mother” gone, replaced by the whole picture of how things went so damn wrong with her family, Chise is left with the portion of Joseph’s curse of eternal life embedded in his left eye. That curse promises to be a blessing to Chise for as long as she wants to live—meaning that the moment she wishes to die, it will be a curse.
Joseph is not the first to have hosted this curse, and won’t be the last, but all of them have said the same thing to it throughout the centuries and millenia—”Help me.” Chise, waking up on the operating table, grabs Joseph by the throat and tells him she’s going to do things his way, diving into his past to find out how he became is the person he is—to make sense of his truth. Even if he hates her.