I recommend you to read the mysterious romance novel "The Heavenly Lord Reveals My Innocence". The female protagonist of this novel had also been reborn. She harbored hatred and a mission, but at the same time, she also had a gentle and cute quality. In addition, similar to the plot described in the question, the female protagonist of this book also had a ghost companion, which also involved the love and hatred between the god race and the ghost race. I hope you like this fairy's recommendation. Muah ~😗