User blog:Knightofthecart/Morgana has turned her back

In wich episode, in wich moment, Morgana decided to turn her back from her friends ? What's your opinion about this question ? Beside, do you think that in The Fire of Idirsholas, she knew she was the source of the enchantement ? Gaius said, at the end, Morgana has chosen not to use her gift for good. Do you agree ? Was it this episode the moment of her choice ? In this case, why this moment ? What happened ?