Well, I personally see Belit as a good archer and spearwoman, but - after reading Deuce's comment at post #45 - not as a swordwoman.
Then what is Belit thrusting with?
In one mad instant she was there--a tense white shape, vibrant with love fierce as a she-panther's. The dazed Cimmerian saw between him and the onrushing death, her lithe figure, shimmering like ivory beneath the moon; he saw the blaze of her dark eyes, the thick cluster of her burnished hair; her bosom heaved, her red lips were parted, she cried out sharp and ringing at the ring of steel as she thrust at the winged monster's breast.
...because how I interpret it, she's swinging a sword in a circular arc to keep the monster at bay, so quickly that the movement is blurred, creating the illusion of a "ring of steel", and following through with a thrust. Since she's not a corporal being, it doesn't actually harm the creature, just keeps him off long enough for Conan to free himself. If, like me, you have a sword, at home, then I would urge you to try it (outside, of course). The description simply doesn't work by substituting a dagger, a spear, or Belit's bare hands. If someone has an alternate interpretation of that passage, I would love to hear it.