for there is something in the heart of man which will bend under moral suasion
Going back to my other point, again, I think she knows that it is not as simple as appealing to someone's morals, because if that were the case she could have stuck with the previous paragraph and that would have been enough to argue her case. She knows that she cannot leave these women feeling attacked if she wants them to convince the men in their lives to join the cause as well. I think she is fully aware that "moral suasion" is simply not enough and will not be enough, so that affects her tone and voice in the rest of this piece.