One way is to explore their friendship deeper. Maybe write about how Wendy teaches Peter Pan about the importance of family and home, while Peter Pan shows Wendy the joys of freedom and flight. You can also include other characters from Neverland like the Lost Boys and Tinker Bell in positive and family - friendly interactions.
You can center on the themes of the original story, such as the concept of growing up or the power of imagination. For instance, Wendy could be having a conversation with Peter Pan about what it means to be an adult in the real world while still holding onto the magic of Neverland in her heart. Avoid any form of inappropriate content and keep it in line with the innocent spirit of the classic tale.