How does the novel's last scene contrast with what Keir has believed up until this point in the novel, Inexcusable?

The final scene in the novel is an exact reversal of what Keir has been trying to achieve since the beginning. Keir has been so intent on showing Gigi the light, he is sure that his kisses and his affections, will make her come to her senses. In this forceful act that it is Keir who finally awakens to what he is doing and what he has done. He does not run away. He has nothing to hide behind and he will now be held accountable for his actions.