I have saved this one for my kids in future. ...
"Once there was a king and a queen, they lived in a very big castle in the forest ...
They have a cute little daughter( as u are a girl ) , she was very annoying and won't go to sleep when said to.....so the king came to her with his sword, the little princess was terrified, she asked "why are u woth your sword father" the king replied "cause u wont let me spend time with your mommy", and as soon as the king was about to split her head, the princess faded and slept.... it was the plan the king came up with ... i will kill u if u don't sleep now ... go to bed now, lights off, eyes closed, good night "