Could you please elaborate on the context behind the transformation of Meteora into a baby? Is this a reference to a specific event, character, or storyline from a movie, TV show, book, or other form of media? Without further details, it's difficult to provide a definitive answer as the reasons for such a transformation can vary widely depending on the source material.
However, in general, transformations of characters into babies or other forms can often serve as a plot device to introduce new challenges, conflicts, or character development. It could also be a metaphorical representation of a character's vulnerability, innocence, or a need for protection. Without knowing the specific context, it's impossible to say exactly why Meteora turned into a baby, but it likely serves some narrative purpose within the story.