Of course, he should not have done this.

It was, indeed, wrong.

But he had assured her that he could not help it, that he was always blurting things out.

Since it was a habit of long standing, now probably ingrained, it was useless to reproach him with any great severity for his frankness.
She did not do so.
For his part, the Lord Loudwater had but little to say to his wife.

She was fond of Melchisidec and indifferent to horses.