The so-called "feeding" was indeed taking effect.
Not for Margaret, but for it—let's call it a devil for now, even though it might just be an unidentified substance with devilish characteristics.
Margaret could feel that, with the increasing frequency of consuming bodily fluids, its power was growing stronger, and its body shape was becoming more stable. For instance, tonight, the head it condensed lingered for a long time without dissipating, and a large mass of black mist lingered on the bed, with thin tentacles entwining around her waist, abdomen, and thighs.
A eerie chill crept up Margaret's spine.
It felt as though she was being embraced by it. As she lifted her head, she could see its towering countenance, its dark red eyes devoid of any emotion, indifferently watching the copulation of human men and women.
Andy was also embracing Margaret. Face to face, he tucked her into his arms, his flesh pressing against her entrance, slowly sinking in.