Something happens at night

You drift off to sleep once Amra gets settled in the crib. You hear a knock at the door. Without feeling yourself wake or get up, you find yourself answering the door. You are naked, not a problem for you as that is how you normally live your life but you swear you went to sleep still with the cloth over your equine body as Mary was not there to take it off earlier. You open the door to find a naked Hwin. This was odd as you know humans do not normally walk around naked, especially not modest Hwin. With a seductive swish of her long red hair, she pushes past you into the room, you get a glance of her toned ass as she walks away. You turn around to see her laid out on the bed, legs spread wide and beckoning you closer with a finger. As you get closer, you notice some things are off. She has no pubic hair and her nipples and labia are not as you remember.

"Mount me, you brave, noble station." Hwin says in a seductive tone.

"You know I can't my love, You will have to use your tongue and breasts like we did the other day." You reply, confused that Hwin would forget something as obvious. Even as you spoke your large equine cock hung half-erect between your legs.

"The castle's healer gave me some herbs that make me more flexible," Hwin said.

You had heard rumours around this sort of thing. Herbs to make your muscles relax and make tendons more flexible. could they really work well enough to allow a human vagina to stretch over a centaur cock. You paused for a moment, your cock hardening at the possibility of having Hwin properly and completely. Your mind remembers one more thing that isn't right. "What about Amra?" You question.

"She seems to be sleeping quietly, we will just have to be quiet, which is a shame because I can be very vocal." Hwin replies.

You glance back but find something very wrong. In the crib is a bay centaur baby. Wait that's not right. what is going on, where is Amra? "This is not right, what is going on." You ask Hwin in a bit of a panic.

"What's wrong, stud?" Hwin asked more calmy than you expect. "Is it the pubes, I shaved them. Or the boobs, the light can play tricks. Oh wait, the baby, I didn't see her, I knew I should have drawn you to my room." Hwin's voice had changed, sounding closer to that of The Lady.

"This is not right." You declared. As you thought about it, you didn't remember waking up, this must be a dream, no, a nightmare. Before your eyes, Hwin's form shifted into a demonic version of The Lady, horns on her head, red tail and red and black bat-like wings sprouting from her back. The image fades as you wake, aroused, drenched in sweat and with a major headache.