When portraying herself in a bad light, Lisa can still smile, which only further shows how troubled her head is.
Of course, this was not stupidity. It was probably intelligence that had already surpassed the limits of intelligence so that she had no more confusion over what she should do.
She was not hindered by anything including morals.
Basically, she was the same as Rebecca, just a slightly different way of life.
Perhaps all the women of those families were like that.
The ones who were truly sane were very few. Jane of the Armstrong Family seemed to be normal, but she was also young, perhaps still in a state of conflict of mind.
Arthur took her hands that were on his shoulders and removed them from there as he replied, "I can accept you, but as a collection as you said. And you must be ready to do whatever I command."