"Darunter ist eine Frau."
Accentuation seems important here. The audio was "daRUNTER ist eine Frau" This would mean "There is a woman among them." or maybe the given translation " A woman is included." Though this sounds funny to me, like "The rent is $ 180 a night, a woman is included."
The other given translation was "One woman's among them" This would be "Darunter ist EINe Frau", different than the audio. Apart from that, the apostrophe looks strange in this sentence.