Hateful girl! At any rate she shall have no answer to this effusion." Then he put the letter into a drawer which he locked.
As a consequence, naturally, Isobel did receive "no answer," a fact from which she drew her own conclusions.

Indeed, it would not be too much to say that these seared her soul.

She had written to Godfrey, she had humbled herself before Godfrey, and he sent her--no answer.

It never occurred to her to make inquiries as to the fate of that letter, except once when she asked the housemaid whom she chanced to meet, whether she had given it to Mrs.Parsons.The girl, whose brain, or whatever represented that organ, was entirely fixed upon a young man in the village of whom she was jealous, answered, yes.

Perhaps she had entirely forgotten the incident, or perhaps she considered the throwing of the letter upon a table as equivalent to delivery.
At any rate, Isobel, who thought, like most other young people, that when they once have written something, it is conveyed by a magical agency to the addressee, even if left between the leaves of a blotter, accepted the assurance as conclusive.