Since the core unit occupies Alexandra’s womb and after her full Bane encasement, nothing will ever be able to reach her little remaining human biology; Alexandra’s reproductive systems become not just useless, but also a possible health risk and could cause potential hormonal complications.
To eliminate these complications, Lumina surgically removes both of Alexandra’s ovaries, her fallopian tubes, and all remaining reproductive tissue. During the procedure, Lumina harvests and in fact preserves all of Alexandra’s viable eggs, storing them in a specialized medical Cryo-vault deep within the mansion’s underground laboratory.
But Lumina doesn’t actually inform Alexandra of this preservation. Logically, there is no reason to keep them—Alexandra will never use them, and her transformation into a Bane makes biological reproduction entirely impossible. Yet, Lumina finds herself unable to discard them, the act feeling fundamentally wrong, even though she cannot articulate why.
This being one of Lumina’s rare, purely emotional, non-rational decisions.
Because Alexandra has no issue with the removal of her ovaries, accepting it as necessary without hesitation. She doesn’t ask what will happen to them, assuming Lumina would just get rid of any biological material they removed from her body. Alexandra doesn’t mourn the loss of her reproductive capacity, never having thought about the idea of children, especially since her decision to become a perfect, anonymous latex being. Her womb will carry Lumina’s core. That’s all that matters.
This represents yet another complete surrender—Alexandra sacrificing any possibility of a biological future for the honour of becoming a perfect Bane, Lumina’s slave, and her vessel.