its creepy cuz all thruout the game whats his name(idr the flute carrying guy) had this thing for ammy and idk if going by actual lore if she had a humaniod form or not

In Shinto mythology Amaterasu always takes human form. The wolf form is not strictly in keeping with the mythology, it is more like an avatar.

Plus, people with spiritual powers in the game often mentioned seeing Amaterasu as a beautiful woman.