In a secret lab, deep beneath Lex Corp………..
“As you can see Supergirl, your services here are no longer required. We have taken everything we needed from you, as I’m, sure your successor standing beside you will testify when she goes up against the JLA. Your DNA combined with Lex Corp technology has made her stronger, faster and more intelligent than you, and totally dedicated to serve Mr Luthor. He shall be very pleased, very pleased indeed.
As for you my dear…well, let’s just say there is enough kryptonite coursing through this machine to make your last moments very unpleasant indeed”.