It’s her bursting in Draco’s laboratory for the first time after another argument with Ron, after she made clear she didn’t want a relationship with him. It’s Narcissa making tea for her and Draco, already seeing what their tenuous friendship will become. Draco almost crying of happiness at Theodore joining the Order. Draco, Theodore, Blaise and Pansy in a group hug as the latter two joined the Order as well, she and Neville watching them with small smiles on their faces, much like they are doing now before passing through another door.