Dinah: You cannot seriously think she's still capable of redemption after what we just saw.
Felicity: That is harsh, especially coming from the person who wrongly accused her of murder.
Dinah: So you're saying what Laurel's doing is my fault?!
Felicity: OUR fault. Maybe if we had been a better support system for her...
Dinah: Laurel did not become Black Siren because we were bad friends, Felicity. That is a choice she made on her own, it is not the inevitable consequence of something we did. Everything that has happened since she got fired is ON HER.
Felicity: I think you're being hard on her because you feel guilty.
Dinah: And I think you need to drop the blinders.