You have not come back, as you said you would

Suppose he had lived, would that change of circumstance have altered the result? Could I have made my discovery a marketable commodity, even for Laura's sake, after I had found out that robbery of the rights of others was the essence of Sir Percival's crime? Could I have offered the price of MY silence for HIS confession of the conspiracy, when the effect of that silence must have been to keep the right heir from the estates, and the right owner from the name? Impossible! If Sir Percival had lived, the discovery, from which (In my ignorance of the true nature of the Secret) I had hoped so much, could not have been mine to suppress or to make public, as I thought best, for the vindication of Laura's rights. In common honesty and common honour I must have gone at once to the stranger whose birthright had been usurped--I must have renounced the victory at the moment when it was mine by placing my discovery unreservedly in that stranger's hands--and I must have faced afresh all the difficulties which stood between me and the one object of my life, exactly as I was resolved in my heart of hearts to face them now!
I returned to Welmingham with my mind composed, feeling more sure of myself and my resolution than I had felt yet.
On my way to the hotel I passed the end of the square in which Mrs. Catherick lived. Should I go back to the house, and make another attempt to see her. No. That news of Sir Percival's death, which was the last news she ever expected to hear, must have reached her hours since. All the proceedings at the inquest had been reported in the local paper that morning--there was nothing I could tell her which she did not know already. My interest in making her speak had slackened. I remembered the durtive hatred in her face when she said, "There is no news of Sir Percival that I don't expect--except the news of his death." I remembered the stealthy interest in her eyes when they settled on me at parting, after she had spoken those words. Some instinct, deep in my heart, which I felt to be a true one, made the prospect of again entering her presence repulsive to me--I turned away from the square, and went straight back to the hotel.
Some hours later, while I was resting in the coffee-room, a letter was placed in my hands by the waiter. It was addressed to me by name, and I found on inquiry that it had been left at the bar by a woman just as it was near dusk, and just before the gas was lighted. She had said nothing, and she had gone away again before there was time to speak to her, or even to notice who she was.
I opened the letter. It was neither dated nor signed, and the handwriting was palpably disguised. Before I had read the first sentence, however, I knew who my correspondent was--Mrs. Catherick.
SIR,--You have not come back, as you said you would. No matter--I know the news, and I write to tell you so. Did you see anything particular in my face when you left me? I was wondering, in my own mind, whether the day of his downfall had come at last, and whether you were the chosen instrument for working it. You were, and you HAVE worked it.
You were weak enough, as I have heard, to try and save his life. If you had succeeded, I should have looked upon you as my enemy. Now you have failed, I hold you as my friend. Your inquiries frightened him into the vestry by night--your inquiries, without your privity and against your will, have served the hatred and wreaked the vengeance of three-and-twenty vears. Thank you, sir, in spite of yourself.
I owe something to the man who has done this. How can I pay my debt? If I was a young woman still I might say, "Come, put your arm round my waist, and kiss me, if you like." I should have been fond enough of you even to go that length, and you would have accepted my invitation--you would, sir, twenty years ago! But I am an old woman now. Well! I can satisfy your curiosity, and pay my debt in that way. You HAD a great curiosity to know certain private affairs of mine when you came to see me--private affairs which all your sharpness could not look into without my help-private affairs which you have not discovered, even now. You SHALL discover them--your curiosity shall be satisfied. I will take any trouble to please you, my estimable young friend!