She needs to grow up. Think about how mature Moon was at Star's age, actually understanding the great responsibility that she is inheriting. Star has mostly run away from, or actively rejected that responsibility. Only through her own personal suffering, does she ever seem to grown and learn.
Star moves through the worlds leaving lots of physical and emotional damage in her wake, often showing little remorse, and not learning from her actions. Like many hyperactive manics, her own personal suffering is all that she will learn from, because she is bouncing off the walls too much to notice anything else.
One of the results of her suffering in Season 2, is that she is starting to mature, and probably won't destroy the universe due to "woops, butterfingers", and might even make a good Queen.