I just thought of something. Everyone has been talking about Black Siren being redeemed and she has shown signs that it is possible but I'm wondering what could be the event that kickstarts her new path and the only thing that I can think of is Quentin Lance dying on Lian Yu. Earth-2 Laurel has shown that she does care about Quentin despite the fact that she was working with Prometheus and only did so under the guarantee that Quentin wouldn't be harmed. If he was to die then Laurel might come to realise the consequences of siding with men like Adrian Chase and this could start her redemption.
Let me know what you guys think.