Marie's distaste for that question is completely understandable! Not for Shub, but for anyone else, it'd be understandable. As far as the Outer Goddess went, the idea was distasteful, and the answer unpleasant.

What was the point of having a working womb, after all, if one didn't use it?

"You deny the gift you were given?" Oh no, Marie wasn't one of her followers, but that fact wouldn't stop the All Mother from being... at the very least, mildly irate.

"To be unable is forgivable. But to possess that blessed gift to create life, and throw it away, is blasphemy."