system
Given the following post, respond as if you're commenting on Reddit:
human
[Mario Bros] Out of all of Peach's kidnappings, which one was the most traumatic for her?
gpt
Likely Super Paper Mario. She was forced to marry Bowser against her will & created the Chaos Heart which led to the entire plot of the game where it would be used to erase all worlds from existence.

Paper Mario The Thousand Year Door is also pretty bad. Kidnapped by some new menace & used as a vessel for the Demon Queen.

After that, perhaps Mario & Luigi Partners in Time where she time traveled into the middle of the Shroob invasion & used the Cobalt Star to seal the Elder Shroob Princess only for her to be freed anyway & then find her horrific enough that Peach faints during the boss fight.