Those are some interesting theories.... But what if Aelita turns out to be Madame X in the future? because Puppet master wanted MC to be with Aelita at all times, so Aelita doesn't get crazy again.... just a thought.
If I figured out well, Crescent is using Garufian magic, and she is kinda against Madame X.... Aelita was cursed by Garufians to be "good" and when the curse was lifted she god all evil and out of control.... idk just a thought