User blog comment:Morgana18/Morgana's Ultimate Weakness/@comment-5674726-20121123224645

Emrys seem like Morgana's only exposable weakness.

She trusts Aithusa but, as a Dragonlord, Merlin can force Aithusa to betray her. However, Merlin knows that Aithusa was with Morgana, and knows that he can command her so, unless it's going to come as a surprise to him that? Aithusa is still with Morgana, it doesn't seem like it's going to be a weakness that can be exposed.

Merlin has seen that Morgana is terrified of his Emrys persona but perhaps Arthur is going to be the one to learn about him, and the whole destiny and doom thing.