>>924OP do you mean limbo? I think both mean similar things, but purgatory is a more religious use of the term.
I see what you mean though. She couldn't pass on or move on until she finished her easter egg hunt for all the things that (speculation) were important to her, or related to her memories and things in her life.
Maybe she was actually stuck in the dream land, and at the end she woke up? I have no idea.