This 'Granny Seal'e' who was by Negary's side was someone who sought out and joined Reya of her own accord 6 years ago.
She was a Witch, the very same kind that everyone thought of from the legends whenever they heard the word 'witch'.
From her appearance alone, she fit the role to a T. An eerily old face, a rickety figure as well as weird laughter, the spitting image of an evil Witch from any fairy tale.
And it was also this Granny Seal'e who first prophesied about the Saintress of Salvation, soon after she made this prophecy, she disappeared without a trace. The next time she appeared, she came to offer her forehead to Negary on her own.
Granny Seal'e's current job was to teach Negary her knowledge about mysticism, as well as the legendary [Dracotongue] language.