Luna's eyes flickered towards Harry's scar with no shame, her smile morphing slightly into a weary grin. "I should not want to be The Boy Who Lived for so long," she said simply, "although you would be a shocking sight without your iconic scar." Her hand gently traced a lightning bolt on her forehead, before both hands made little "o"s around her eyes, mimicking glasses. "Why yes, I'm Harry Potter," she said, pitching her voice a few octaves lower than her own. "Of course I can sign your poster of me -- especially if its the one with Mister Lockhart." Her hands dropped, and she grinned slightly cheekily. "What do you think, original? Can I be your replacement?"
Luna had acutely felt the loss of Hagrid; he was, after all, one of her favourite teachers. Professor Weasley was wonderful but lacked that Hagrid quality that possibly came from being a half-giant but entire sweetheart. "I miss him too," she said, sadly watching the dog as Fang whimpered at the two of them.
She giggled at the idea of putting Fang through the portrait and even moreso at the idea of Professor McGonagall having kittens. The image of the mother cat lecturing her children transifiguration floated into her mind, one that she eagerly related to Harry: "I'm sure Professor McGonagall will be able to teach kittens how to be animaguses, and have their animal form be humans!"
"Let's take him there," she said decisively, and began to head off to the direction of the hut, with Fang eagerly following. "I'm sure he'll be comforted by the familiar environment, even if Hagrid isn't around." She looked down at Fang and ran his fingers through his fur. "I'll come visit you from now on, I promise." And, in her typical Luna-like manner, she voiced out all discomfort: looking at Harry, she smiled with no contempt or distaste, and spoke with no cruelty, "You don't have to make the same promise, Harry. We know you're very busy."