Shadowbat: Ashes Of Gotham(Batman fanfiction)

Shaya was taken in when she was 13 years old. Talia had told Batman that she needed to go because of many reasons. With her twin not known and shaya told to keep to secrecy on it. Everything is calm relativly as it would go for Gotham. Eventually by age 14 Shaya becomes Robin and things get interesting as Bruce trains her trying to break her of her killing habit much as he did for Damian. Though what happens when things go south and the league of assassins move in on Gotham plans of destroying it for Ra's little dream and the one heading it is Shaya's twin.