User blog comment:Morganaforever/Reactions at the magical reveal/@comment-4814726-20120617163242/@comment-4650675-20120618190501

She is not the first or the last monarch that had to rely on such cruel methods. In history a lot of monarchs from ancient times had to do such things, and I doubt all of them had to be mentally ill.

She has also shown compassion and empathy. An example of this is when she resurrected Lancelot and was really sad about him losing his former glory. Or when her sister forced her to sacrifice her body to unleash the dorocha. She also has social interaction; If she did not, then she wouldn't make allies of all people that would prove useful to her.

If you think about it, she only makes the necessary sacrifices. If she did not, she would kill Annis on the spot for telling her she was like the man she despised the most. She would also kill Merlin, Guinevere and Arthur on her own and not rely on plans, because psychopaths enjoy killing. Morgana only tortured and killed when she would gain something from it and not for pleasure. That's what makes her a sane person.