I thought I knew exactly what happened
- her interaction with rand about their being more to things
- telling Perrin that 'some say those who are turned are dead already... Some say'
- that those who are supremely good when turned become supremely bad... Those mildy good become mildy bad'
I was SURE I knew what was coming...
That she was turned. That she was never that good, loved power not the light, but that didn't make her evil. So she become mildy evil. And then had to watch her friends & family say 'of course she'd go over to him'
So she just embraced it. And maybe she did wear LTT like an ornament, but she loved him in her own way. Whatever happened to her in her life, she couldn't make herself vulnerable, not to love, and not to show rand really what happened in TRR.
I thought she wasn't originally evil, just turned and betrayed.
Then her last scene with Perrin... Damn! It was such a good theory that explained everything!