I'm the Mother of the Heroine? (Book 1)

(Highest Ranked: #24 in Fantasy/Magic)
THIS IS AN ORIGINAL STORY (2nd Book is already up on my Profile; This one is Complete)
I died and when I woke up I had just given birth to a child. Not just any child though, but the Heroine of an Otome game called 'Revenge Served Sweetest Alongside You'. All I want now is to raise my daughter and hope that she never has to face the kind of life she would've had.
Why are these children so attached to me?
Why is my brother so sticky?
Where did a Demon King come from?! That was nowhere in the game!

[As a sort of Disclaimer: This had been originally planned to be more Mature but turned to more of a subtle mature theme; aside from the gore. It is meant more as an introductory background story for all the characters. ]