Margaret Mahy’s 1984 The Changeover is a standalone YA fantasy novel.
Schoolgirl Laura Chant lives with her divorced mother Kate and her younger brother Jacko. One morning she wakes with a premonition that life in the quiet Christchurch suburb of Gardendale is about to change for the worse. She knows from past experience that her premonitions are trustworthy. However, there seems to be nothing she can do to prevent whatever fate is looming. She must carry on as normal and hope for the best.
She does not get the best.