There wasn't a day that passed by that you didn't think about the way your older sister treated you. You remembered it all. The way she punched you in the face, insulted you, then made her way away from you, leaving you to cry and plead for her not to leave you. You were only trying to help, not.. kill.. Mylo and Claggor. You were just a kid. (You have the option to either work for Silco, or become a loner.)
In Vi's POV, she has now been released from Stillwater prison, making her way back to Zaun. After seven years, locked up for a murder she never committed, she was finally free. Physically.
When Vi made it back to Zaun, she thought about you.. how you both ended your sisterhood/sistership, even if you were blood relatives. Your blood bond turned sour, a depressing reminder that you both will never truly be away from each other for long.