Do you remember the Hobbit Series (Yes it was written as a Christian Good vrs Evil Story...)? Remember the Evil one could not be killed by a Man so A women did it???
https://www.youtube.com/watch?v=MSNPeJAgBzo
That being true, then one of the Elvenkind, one of the Dwarven, or even one of the Hobbits could have done the deed as well, none of being a Man (human).
These types of things are meant to be taken literally.
(Psst! Woman, singular, not women, plural. Just FYI) :)