Michelle is Robyn’s former protégé that she left behind in Venezuela under the assumption she died during a unit extraction. Michelle didn’t die, but another member of her and Robyn’s team, Ed, did. Because Michelle felt abandoned by Robyn and the CIA, she swore vengeance. Thus, she joined the Venezuelan Freedom Fighters, and learning from Enrique that Robyn was working with Fisk was all the confirmation Michelle needed to know Robyn did abandon her. This leads to her setting up Robyn and her allies to get captured and Michelle setting up Dante, Mel, and Harry to die like Ed did, by a kerosine fire.