User blog comment:DYBAD/Character Sheet/@comment-26362471-20171115224527/@comment-4867780-20171121013440

No one needs their parents once they are fully grown up, we keep seeing them for the bonds and love built during all these years and out of gratitude for everything they did for us. That's why the Silver Sisters remain present in the life of the children they have raised. Just because they are no longer needed doesn't mean they should disappear from their life, it only means they will be around less often.

Sisters are not tools to use and discard, they are actual people, just a lot more altruistic than most, and the bonds uniting them to Legacy residents are every bit as real and genuine than those between Selforge citizens.