There are fanfictions that focus on Robbie Kay's Peter Pan having a more complex backstory. For instance, he might have a past on the mainland that he doesn't remember, and as the story unfolds in the fanfiction, he discovers his true origins. This could involve his family or some sort of prophecy related to him. Some fanfictions also explore his relationships with the Lost Boys in more depth, like how he became their leader in a more detailed and emotional way.
Some Tumblr blogs are dedicated to Robbie Kay and Peter Pan fanfiction. By searching relevant tags like #RobbieKayPeterPanFanfiction, you might be able to discover some great stories. Also, Wattpad sometimes has fanfictions related to this topic. Just make sure to use the search function effectively and you might stumble upon some hidden gems.
You can try fanfiction websites like Archive of Our Own (AO3). It has a large collection of fan - created works, and there's a good chance you'll find some great Peter Pan Robbie Kay fanfiction there.
A really interesting fanfiction idea could be that Robbie Kay's Peter Pan travels to our modern world. He would be completely out of his element, and the story could explore how he adapts. He might meet a girl who is a bit of a skeptic about magic at first but then becomes his guide in this strange new world. There could be a lot of humor in his misunderstandings of modern technology and culture, while also having some heartwarming moments as he discovers new things and forms new relationships.
I don't have enough information to determine exactly who Judith Kay is. She could be an ordinary woman who gets caught up in an extraordinary situation involving the mirror.
Kay might be the person who created this unique fan fiction world. In the context of the story, Kay could also be a protagonist or an important side - character. Maybe Kay is an archaeologist who discovers the mummy and experiences the unexpected comfort. Or Kay could be a local guide in an area with mummy - related legends, and through some adventure, the comfort aspect comes into play. Without reading the fan fiction, it's hard to be certain.