Spoiler (click to show/hide):
Correct, however it's a 'true' child, one that's functionally independent of both parents and to some degree the dungeon, unlike the spawnlings.
"Oh, please Master, don't. I've worked so hard for this flat stomach, and you've already done enough damage. I don't know if I can bear to see it bulge with new life, Masters children growing within me and forcing my flat stomach into a round, gravid state." She moans out, and you feel her pussy clamp down tight on you.