In order to leave as few signs of herself as possible, Juliet had made the decision to fight, move, and survive in the most primitive way possible.
The worst-case scenario for her at this point would be to meet Aron. However, she was convinced that after this modification, even he would have trouble locating her if he was indeed looking for her.
After completing that, she looked down at the corpse and put her hand close to it.
Once more, in order to support the growth of the fertilized egg inside her, she took all life and vitality from the creature.
She observed progress, albeit quite slowly, the more she practiced this art. This just served to highlight her lack of ability to carry Aron's child.
Not because she had much less ability than he did, but rather due to the significant difference in mana viscosity.