Harry Potter Fan Fiction: The Savior Raised by Mary Sues

What kind of changes will Mary Sue Evans, a tech geek, a strict rationalist, and a Mary Sue, bring to Harry Potter when she becomes the guardian of young Harry, who is still a blank slate? To be clear, Harry is the protagonist. This is his story, and it has nothing much to do with his aunt. In other words, this Mary Sue doesn’t get involved in the wizarding world, whether in the Marauders’ era or the next generation. Even though she raised the Boy Who Lived. Uh, I should probably mention again that updates may be very slow...