The Keeper of Krypton

Lena Luthor has to deal with Lex, but after an act of violence that shakes her to the core, she is shocked when he reveals the truth about her best friend. Kara Danvers is Supergirl. Lena then has a moment of weakness that results in a terrible choice. With few choices left Kara risks everything, but sometimes a choice is simply gateway to an entirely new reality for both of them.