When he realized she was not, he took her in as a mentee, training her and enslaving her to his ranks and his guild. She could no longer be Aelin Ashryver Galathynius. She changed her name to Celaena Sardothien.

Who betrayed Celaena Rowan?

Celaena had thrown Luca off the frozen lake to fight the monster herself. When Mistward is attacked by Adarlanian soldiers, Luca fights as well, and he was the one to inform Rowan that the scout leader Bas - who Luca greatly admired - was the one who betrayed them.

Is aelin half fae?

Aelin isn't half nor full-blooded. It is impossible for her to be full-blooded or demi-Fae because neither of her parents were full-blooded Fae.