Under the circumstances Browning has made, her thought would have been quite clear at its root, and indeed in its branches.

She is represented as in love with her husband.

Were she really in love, she would not have been so involved, or able to argue out her life so anxiously.

Love or love's sorrow knows itself at once and altogether, and its cause and aim are simple.

But Browning has unconsciously made the woman clear enough for us to guess the real cause of her departure.