Families can be super complicated, especially when the parents themselves are so toxic that they shamelessly play favorites, while neglecting the other child. Setting up boundaries, or even cutting them off for good, is very important, or it can truly traumatize a person for life.
Even this ignored daughter finally reached her breaking point after the “golden” daughter flirted with her fiancé and told him he would be better off without her. He was horrified as their parents just watched, so he asked his fiancée to go no-contact with them. Here’s all the drama that followed when she did!
More info: Reddit