James Middleton responds to his sister, Catherine (Kate), after she completes the Three Peaks Challenge. Multiple reports describe how Catherine shares an Instagram post featuring her at the summit of Ben Nevis, smiling as she reaches the peak. James leaves a short, supportive reaction beneath the image, using only two emojis: one depicting a mountain and one showing a heart. The posts frame James’s response as a brief but personal acknowledgment of Kate’s achievement, without additional text or further details. Overall, the coverage centers on Catherine’s accomplishment and the family’s public support visible through the Instagram interaction. No other substantive information about the challenge, its conditions, or Catherine’s performance is added beyond the mention of her reaching Ben Nevis and posting the photo afterward. The accounts therefore largely agree on the same core elements: Catherine completes the challenge, shares a summit photo, and James reacts with a mountain and heart emoji.