The feeling of having her womb opened is insanity itself.  Miaren's fingers scrabble in the grass as she tries in vain to pull forward.  She cannot see the mass that swells her attacker's penis, but she can certainly feel it.  She feels the muscles of her vagina fight against it, and feels them pressed wide as it forces its way past her opening.  Is this a knot like she has seen with wolves?  Or something completely different?