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

If an enchantment was used, it's possible that Morgause used a slower but gentler method than Morgana did with Guinevere. The healing bracelet concerned me from the beginning because, not only did it suppress Morgana's Seer power - potentially making her unbalanced since she was born with it and it was being stifled by artificial means - Morgana was oddly willing to trust Morgause after she started wearing it, instead of being creeped out about the fact that she sneaked into her room in the middle of the night to leave something that Morgana had already refused to accept.