While the letters of Maria Christina showed her happy nature, Isabel's feelings were mixed and, in her expressions of affection, showed a certain pessimism, reflecting her growing obsession with death.
虽然玛丽亚·克里斯蒂娜的信显示了她快乐的天性，伊莎贝尔的感情却是复杂的，在她的情感表达中，她表现出了某种悲观，反映出她对死亡的日益痴迷。