Brick
Ginny grew up with the story of Wizard of Oz. She wondered why the Green wizard had to act like a wizard when she was fairly certain that he just did not want to accept his wizarding heritage. It wasn't until later in life when things began to change in her life – her crush on Harry Potter, Chamber of Secrets, and disaster after disaster – which she understood why that man hid behind a screen to act mighty.
She walked down the London cobble-stoned streets until she came to a solid brick wall. She imagined it opening to show a yellow brick road, like the one in the Wizard of Oz, and pressed her wrinkled hand on the wall. Almost after a hundred years she could master this type of magic; a magic not even Harry Potter could do.
Neville would miss her; her family would mourn over her like they had over their parents two decades ago and Fred almost a century ago. Harry and Hermione would lament with the family; Harry soul-mated to George almost half a century ago, while Hermione had married Ronald right after the Final Battle.
She sighed as the bricks reacted to her magic, another world twisting into creation. She knew there would be a yellow brick road ahead, a green city and a lollypop guild; there would be no Neville, the love of her life, to come back to. Her family would be out of her life for the rest of forever.
Ginny Weasley buried her own thoughts and walked to that castle where the Wizard would finally learn of his magic.