There may be sophistry in all this; but the condition of a slave confuses all principles ofmorality, and, in fact, renders the practice of them impossible.
To me, this seems like she and the slave community do what they can, if there is a chance of some improvement in their condition. This is regardless of what "morals" are broken. I found it especially moving that she says the practice of morals is impossible due to their condition. I've never thought of this perspective before!