When Norman Osborn assumes control of the Initiative during the "Dark Reign" storyline, Diamondback agrees to work for him. Diamondback is revealed as a member of the Initiative's new team for the state of Delaware, the Women Warriors. After the Constrictor saves her life from a crashing plane, the two begin a sexual relationship. However, Constrictor discovers that she is secretly working for Gauntlet's "Avengers Resistance". Constrictor decides not to say anything but worries about what would happen if she were found out. Both Diamondback and Constrictor are part of the invasion of Asgard. Diamondback tries to contact the Resistance but cannot get through. She debates whether or not to help Thor when Osborn and several others gang up on him. When Maria Hill comes to Thor's defense by firing a rocket launcher at Osborn's men, Diamondback adds to the explosion by dropping some explosive diamonds. Constrictor saves her and the two argue about her reckless behavior. They witness Sentry killing Ares and Diamondback sees Steve Rogers entering the battlefield. As the Avengers begin to turn the tide in the battle, Diamondback tries to get Steve Rogers's attention and make sure he knows she and Constrictor are on his side. Constrictor misinterprets her actions and think she's abandoning him. She turns to find him but at the same time Sentry attacks Asgard's foundations on Osborn's orders. As Rachel and Constrictor reach out to each other, Asgard falls to the ground. Rachel is dug out by Steve Rogers. Constrictor sees this and thinking Rachel does not love him, flees the scene with Taskmaster. After Osborn's defeat, Rachel attends a party at Avengers Tower where Rogers asks her to coordinate the remaining Fifty State teams. She tells him she will consider it.