I became a stepmother in a dark family that cannot be rehabilitated

"A romantic fantasy version of a female protagonist possessed by a hardcore childcare film, 'My baby is like gold!'" Since ancient times, childcare films have been a genre in which a cute and adorable child becomes the main character and heals the body and mind while receiving lots of love from everyone… There seems to be something very wrong with the parenting material I possessed! Even though it is the heyday of possession and return, Liona, who is possessed by a hardcore childcare drama, ends up becoming the dream girl of an extremely evil villain, the golden of golden women, and the stepmother of Rebecca, the only daughter of a dark family. Because she was a minor victim of Rebecca's grumpiness, she tried to escape and save her life, but… "Are you going to go away, too? You're going to abandon me like other mothers…!" Maybe it's good that her heart weakens when she sees the little boy talking like this? “You seem a little different. I need to keep you next to me.” Why is this operation called the dark side reacting like this? Liona, will she be able to survive safely in this world?