Bradbury did it

https://en.wikipedia.org/wiki/The_Small_Assassin_(short_story)

pdf here

"It's not nice being afraid of the thing you birthed." Her whisper lowered, became harsh, fierce, swift. "He tried to kill me! He lies there, listens to us talking, waiting for you to go away so he can try to kill me again! I swear it!" Sobs broke from her.
"Please," he kept saying, soothing her. "Stop it, stop it. Please."
She cried in the dark for a long time. Very late she relaxed, shakingly, against him. Her breathing came soft, warm, regular, her body twitched its worn reflexes and she slept.
He drowsed.
And just before his eyes lidded wearily down, sinking him into deeper and yet deeper tides, he heard a strange little sound of awareness and awakeness in the room.
The sound of small, moist, pinkly elastic lips.
The baby.