system
Given the following post, respond as if you're commenting on Reddit:
human
[Disney Atlantis] Question about the ending.

Just rewatched this movie the other day and I had a question about the ending.  At the climax of the film, Kida merged with the Crystal Power Source to save the City from the volcano. She was subsequently returned after the City was safe.  However, in the beginning of the film, her mother was absorbed to save the City from the flood and was never returned.

Why did Kida come back and not her mother?  Why was she not permanently absorbed into the power source?
gpt
Her mother spent spent longer within it. When Atlantis the continent was inundated, Atlantis the city was below sea level, and the crystal heart had to protect the city from tons of seawater more or less indefinitely by sinking it into an underground air pocket. The lava flow lasted only a few minutes, so Kida could still be unfused afterward.