At least in the film, she likely managed to escape from jail (someone managed to notice a French prison tattoo (signifying a life sentence without parole) on her neck in the last scene).

arisboch said in comment #2609269:

Best guess between me and my friends, she turned herself in the moment the Hail Mary was underway and heading out of the solar system, and she was released to head up the last phase of the program when the Beatles returned and everyone was like "Oh damn, it WORKED?! We're gonna need our top experts back on the job again"