Sentence:  But his wants are really few; his tastes were naturally simple; he had been becoming blase/ on everything, when he found his occupation as an artist gone; and he is consoled besides by the love of the <WSD>cousinette</WSD>, who has proved that her giddiness was only skin-deep by giving him a marvellous proof of disinterestedness. 
Meaning of the word marked with <WSD> tags:  A young female cousin.