i am starting to doubt all manga i have read and anime i have watch with Hero's and Saintess after reading 'THIS MANGA!' hope more chapters come out soon...
@Add1152000 there's a few chapters that goes into their childhood in the last arc of the WN (around 130-135 iirc) and
Yes your guess is pretty spot on. She did originally have the typical saint like personality but was heavily influenced by him. What really drove the nail in the coffin was him telling her his goal after which you see her turn into the Magary have now.