Peter Pan was chasing his shadow. His shadow went to Wendy. That is how Peter Pan met Wendy –  his shadow chose her.
 
Wendy returned his shadow to him. She did not carry it.
 
Peter took it back and felt better.
 
After that, Peter and Wendy became friends.
 
What is Peter Pan syndrome? Not integrating the shadow.
What is Wendy syndrome? Carrying the shadow of another (to avoid one’s own)