What is the climax of third wish by joan aiken?

The climax of the story "Third Wish" by Joan Aiken occurs when Dido Twite, the protagonist, is confronted by the evil, shapeshifting witch, Lady Macbeth, who demands the third wish. This confrontation takes place in the midst of a tense and atmospheric setting, as Dido realizes the true nature of Lady Macbeth's intentions and must decide whether to surrender the wish or risk dire consequences.