I liked the pseudo-temptation of Eadric by Sonellion: by choosing to slay her in cold blood he will have jumped, or at least fallen, into Sonellion's waiting arms. But to allow an aeons old Evil to live is the Good thing to do. Much like Titivilus' temptation, that the temptation is to tell the devil to go away.
Then one wonders: is it in the belief and conviction, or the act, that makes someone Evil. For instance, what if Eadric had decided to slay a helpless Sonellion in cold blood. Would that blow have had to have landed for Eadric to fall (for his alignment to change from LG)? Would Sonellion have had to have died for him to fall? Or what if merely the truly convicted intention to kill would have caused Eadric to fall. The Sword of Truth series gives precident for this, for Truth will never strike a creature the seeker believes to be innocent... in this case it is then intention, and not the deed, that is important.
If the intention to do the act is what matters, then as soon as Eadric makes to kill Sonellion, he becomes not-LG. And considering that Eadric, if he does fall, will fall faster and further than any in a long time, his alignment changes to CE. Lukarn, the intelligent keen sunblade, decides Eadric must also die, makes Eadric drop him. And what you have is a fallen paladin standing next to a very pleased demon queen.
So was compassion the only way to save himself? And if he does it to save himself, is it really compassion?
...yeesh...