…while loving her child with the intensity of a sole affection, had schooled herself to hope for little other return than the waywardness of an April breeze, which spends its time in airy sport, and has its gusts of inexplicable passion, and is petulant in its best of moods, and chills oftener than caresses you, when you take it to your bosom; in requital of which misdemeanours it will sometimes, of its own vague purpose, kiss your cheek with a kind of doubtful tenderness, and play…
There are no more uses of "petulant" in the book.
Show samples from other sources
She stomped her foot like a petulant child.
She is petulant by nature and was clearly insulted by the question.