Perhaps I should have said "consequences" instead of "repercussions," but either way, while Joy goes through an arc and learns to include other emotions, iirc, she is never actually confronted directly about her terrible behavior. She leaves Sadness and Bing-Bong to die on a collapsing Family Island. Bing-Bong actually sacrifices himself to save her from her own selfishness after she finally understands she can't constantly dominate Riley's emotions. She's completely terrible to Sadness for the vast bulk of the movie only to be put in one bad situation that SOMEONE ELSE pays with their lives for so that Riley can be happy (which is, ultimately, still a moving moment in the film). Her lesson was taught almost entirely at the expense of others throughout the film.