Her foreshadowing and dedication is superb. The chapter 32 cover is Real Ciel holding a flower crown that you can see here:
And in chapter 130, we see the exact same image of Real Ciel holding a flower crown but it was for Our Ciel as it was shown at the end of the chapter. This chapter debuted on April 18th, 2009. She waited almost ONE HUNDRED chapters and over EIGHT YEARS to reveal what this image actually meant. Her foreshadowing throughout the entire manga is just amazing. I’m not saying her writing is perfect, as I do have a few problems such as how Sebastian as a demon really works and sometimes her pacing is WAY too slow, but her dedication to this series is something that MUST be admired. She’s waited almost ELEVEN years to reveal such a huge plot twist for a series that has been lying to you for a decade. And that is something that must be praised.