The expectant woman was looking for help on how best to ask her fiancé to get rid of his child (Photo: Shutterstock)

Fairytales have given us stories of wicked stepmothers and the cruel punishments they enact on their partner's children.

But it seems this sort of thing isn't confined to books and also happens in real life as well, if a social media post is to be believed.

An unnamed step-mum took to Facebook to seek advice from a popular life coach and her post has sparked absolute outrage after being shared in the group, CTL+ALT+DELETE That Relationship.

In her post she claimed she is seven months pregnant with a baby girl and she can't wait for the child to arrive, but there's just one problem - her fiancé's daughter.

She told how her partner is widowed and is the sole carer of his four-year-old little girl.

And despite knowing the child no longer has a mother, the step mum also wants her to lose her father.

The woman said she was looking for help on how best to ask her fiancé to get rid of his child.

Yes, really.

 She confessed that the little girl gets on her nerves (Photo: Shutterstock)

Her post read: "I am not the stepmother type and I know I won’t treat his daughter the same way I will treat our child.

"To be quite honest, she gets on my damn nerves."

She went on to say that the child is the spitting image of her late mother and that she's very "attached" to her daddy.

"I am worried that is going to take away from my child’s bond with her father.

"Basically I want to tell my fiance to get rid of her, she can go live with her grandparents."

She added: "I am not a bad person, I’m just looking out for my child and making sure she receives all of her daddy’s attention without having her 'older sister' intervene."

 The little girl lost her mother, so her dad is all she has (Photo: Shutterstock)

People who saw the post were quick to brand the step-mum "pure evil".

One person commented: "I hope your fiancé realises he is set to marry the wrong woman because the right woman would love and raise that beautiful little girl as her own."

Another wrote: "That poor baby lost her mother and you want to take her father away? I hope you’re dumped ASAP."

A third replied: "This made me literally sick to read. That poor little girl deserves so much more than that hag."

Others questioned whether people could ever actually be this cruel in real life, but a different user piped up to share their own very similar experience.

"It happens,” they said. "My mum’s boyfriend wanted her to move in with him and leave my little brothers in my charge just because he wanted the attention all for himself."