About the Character Sally (DLC pack / Mothership zeta )

You see the history of Sally is pretty simple (see Sally's wiki page for more informations ) . In the Timeline , it is said that sally has been abducted by aliens the 23 october , 2077 . Supposing that she was about 7 years old ,(in 2077) we meet her in the alien spaceship ... in 2277. I know that has been frozen with her sister .. but the question is : who unfreeze her ??