User blog comment:Morgana High Priestess/Could have Morgause brainwashed Morgana?/@comment-5674726-20130314000209/@comment-5674726-20130506004014

It's quite disturbing to see how trusting she was of people with magic in Season Two.

Whatever about Mordred, she should have been alarmed to see Alvarr in her bedchamber. She was willing to wear a magical bracelet left in her room by a sorceress in the dead of night. She even leaves the castle to slip into the forest in the middle of the night in response to an unsigned note.

I think that she needed to believe that Uther was wrong about magic being an evil that always corrupted the soul of the person who wielded it but she went to the opposite extreme and placed her trust in all of the magic users she encountered after learning that she had magic.