If you are writing about a fair-haired woman, which is correct:
both can be used
Can a thing or person which is ovate also be willowy?
I don't know what ovate means
If you think you know what the author meant by "ovately willowy", please explain to me in comments. Extra points if you identify the novel in question.
(I am about to get on a twelve-hour transatlantic flight from Istanbul to New York so it will be a while before I can respond.)