She first began to speak of conversations afterwards held with Lord Byron, in which he boldly avowed the connection as having existed in time past, and as one that was to continue in time to come; and implied that she must submit to it.

She put it to his conscience as concerning his sister's soul, and he said that it was no sin, that it was the way the world was first peopled: the Scriptures taught that all the world descended from one pair; and how could that be unless brothers married their sisters?
that, if not a sin then, it could not be a sin now.
I immediately said, 'Why, Lady Byron, those are the very arguments given in the drama of "Cain."' 'The very same,' was her reply.

'He could reason very speciously on this subject.' She went on to say, that, when she pressed him hard with the universal sentiment of mankind as to the horror and the crime, he took another turn, and said that the horror and crime were the very attraction; that he had worn out all ordinary forms of sin, and that he 'longed for the stimulus of a new kind of vice.' She set before him the dread of detection; and then he became furious.

She should never be the means of his detection, he said.

She should leave him; that he was resolved upon: but she should always bear all the blame of the separation.