She belongs to a middle class London household of that era, and is the daughter of George Darling, a short-tempered and pompous bank/office worker, and his lovely wife, Mary. Wendy shares a nursery room with her two brothers, Michael and John.
At some point, she and her brothers began seeing Peter in their dreams.
Eventually, she meets Peter Pan one night, and helps him sew his shadow back on. She tells Peter she knows many more stories, causing Peter to want to take her to Neverland.
Peter and the tribe of Lost Boys who dwell in Neverland want her to be their "mother" (a role they remember only vaguely), a request she tentatively accedes to, performing various domestic tasks for them.
She eventually realizes that she and her brothers must go home, or risk their parents giving up on them ever returning, and them forgetting their parents forever.
She loves to tell stories and make believe. However, she is also the only one concerned as she realizes her brothers are forgetting their real parents, and is the one who decides they must go back home, even though she has faith the window will always be kept open for their return.
In a later added ending, Wendy has grown up and married, and has a daughter, Jane. When Peter returns looking for Wendy (not understanding that she would no longer be a young girl, as time escapes him while he is in the Neverland), he meets Jane; Wendy lets her daughter go off with him, apparently trusting her to make the same choices.
- Wendy Darling at Neverpedia