Helen was a shapeshifting veteran who wasn't just a survivor in the war, but she was also a professional in prostitution as this is the job she has retired to after her husband died from an ambush sent by Saddam Hussain while they were in the 1990s. The question was, how she looked so young in the first place.
The answer to her shapeshifting was obvious, and that was because during the war against Saddam in Iraq before he was executed at Camp Justice, Helen spied on his men as they were working on nuclear bombs designed to blow up other countries. With Helen was her husband, who died in the hands of Saddam's men, while she was on the ground covered in nuclear radiation that they managed to get rid of, and Saddam got arrested once the rest of the military got to the camp.