Nagisa had insisted on supporting Saki on the hot spring vacation, but when Saki confronts her about it, she begins to speak her mind.
and you couldn't work hard at anything
ولم تستطيعي العمل بجدّ في أيّ شيء
quand tu faisais tous ces efforts
anche se non riuscivi a impegnarti in nulla,
e não conseguia se esforçar para as coisas
и ты ничему не могла 
посвятить себя целиком,