* Creative Differences: It's not uncommon for creators to have disagreements with studios or showrunners, especially as a series evolves. Faust may have had differing visions for the show's direction than Hasbro or the new showrunners.
* Burnout: Creating and running a successful show like My Little Pony is a demanding job. Faust may have felt burned out after two seasons, especially given her intense involvement in the initial development and success of the show.
* Moving on to Other Projects: Faust is a talented writer and artist, and she may have wanted to pursue other creative opportunities. She later went on to create other animated shows like "The Powerpuff Girls" reboot and "DC Super Hero Girls."
It's important to note that Faust has stated that she has a lot of respect for the show's continuing creators and the work they have done. She has even expressed her gratitude for the fans' continued support of the show. While her departure was undoubtedly a significant moment for the series, it allowed new creative voices to shape the show in their own ways, leading to its continued success.