2014’s The Islands of Chaldea was Diana Wynne Jones’ final novel. Unfinished at the time of Jones’ death in 2011, it was completed by Diana Wynne Jones’ sister, Ursula Jones.
The women of Aileen’s family all undergo a rite of passage, one which they hope will lead to a vision and special powers. Aileen is sure that she failed her vision quest. No vision, no evident power or talent. So she is puzzled when her Aunt Beck insists on bringing her to a consultation with King Kenig of the island of Skarr.
This, as you might expect, is the start of her adventures.