This is worth reading. Basically it seems to be referring to the "Mean Girl" syndrome where girls who were once part of an in-crowd are suddenly ostracised by their peers, the feelings of despair that overwhelm them. However, social aggressors usually finish up with deep seated problems of their own. Similar studies have shown that ostracised persons can actually rise emotionally above those who once shunned them.
https://www.healthline.com/health-news/children-those-who-exclude-also-get-hurt-030913#3
https://journals.sagepub.com/doi/abs/10.1177/0146167209358882