She had this sound that was like, "tss, tss, tss," that she could shift in tone from emphatic, "no, no, no," to enticing, "yes, you've almost got it."
Il lui restait ce son,  ressemblant à « tss, tss, tss », dont elle pouvait changer le ton d'un véhément : « non, non, non » à un : « oui, tu as presque compris » encourageant.