Author's Note: I thought this story was finished, but I had a couple ideas for short sequel scenes about Rose and Savin's kids that I couldn't resist writing, so I will be adding them here. Let me know what you think, and feel free to comment with any other scenes you'd like to see added to this story!
It felt almost strange, entering Ollivanders wand shop again after so many years. Both Rose and Savin were still using the original wands that they had gotten on their trips to Ollivanders before setting off to Hogwarts for the first time, so neither had had any reason to return to the wand shop until now. But now, with their son's Hogwarts journey about to begin, they found themselves back at the wand store, this time as observers to the wand selection process. Both parents paused for a moment upon entering the shop, taken aback by how little it seemed to have changed despite the intervening years. Their son, oblivious to their distraction, had continued into the shop, looking around curiously at the piles of wand boxes. Meg, who had entered the shop first with her brother, stared wide-eyed as Mr. Ollivander himself came out behind the counter before hurrying back to stand with her parents, who had begun to move into the shop. Sev, determined to prove himself braver than his little sister (even if he was only not quite two years older than her), stood his ground as the shopkeeper looked at him for a moment with his silvery eyes before looking past the boy to where Rose and Savin stood with Meg.
The wandmaker greeted them with the descriptions of the wands they had bought from him 26 years previously, pausing for a moment to stare at them as he was suddenly reminded of a mystery he had almost forgotten about in the intervening years. The pause was long enough to be noticed by everyone in the shop, though Rose and Savin, slightly more accustomed to the wandmaker's sometimes odd behavior, didn't immediately assume any significance, but Sev couldn't stop himself from blurting out a question, wondering what Ollivander was thinking. The old man seemed initially taken aback by the question; he hadn't realized that he had paused in mid-sentence upon putting together the identities of the two adults before him with the matching sparks he had seen two children produce once upon a time. Now reminded of what he was supposed to be doing, the wandmaker answered the boy by remarking that he remembered the occasions of Rose and Savin getting their wands quite vividly, but didn't say anything further. After all, he felt it would have been rather cliche to claim that the couple were soulmates, simply because they had produced similar (well, identical) wand claiming sparks and now seemed to be happily married with two children. He did, however, make a note to himself to look into the theory more - had there ever been any claims that the sparks produced in a wand claiming could have real meaning?
But for now, there were more pressing tasks, and matching a customer to a wand was always better done undistracted. It took only a few tries to match young Sev to an appropriate wand, made of walnut wood like his father's, though with a unicorn hair for its core. None of the Aurum-Snapes noticed how closely Ollivander watched the sparks that came out of the wand as soon as Sev picked it up, and were too busy congratulating the boy (or in Meg's case, pouting a little that he wouldn't let her hold it) to notice that the old man looked a little disappointed. The sparks emitted by Sev's new wand had been a bright purple in color, bearing no relation to anything that the Ollivander could think of, though he had to admit that there was no real reason to think he should have been able to find significance or pattern in the sparks when he so rarely had before. Still, the wandmaker thought as he wrapped up the purchase and watched the family leave the little shop on their way to finish the rest of Sev's school shopping, he would be curious to see what sparks came out of Meg's chosen wand when she became old enough to buy one.
Much to Ollivander's disappointment, or it would have been if he had remembered that this was something he had been curious about, Meg Aurum-Snape did not buy a wand from his shop when she turned eleven and began preparing to go off to Hogwarts. She, like her brother before her, had tried a wand before going to Ollivanders, but unlike with Sev, Meg did bond with the wand. When Severus Snape had died years before, Rose and Savin had chosen not to bury his wand with him as some wizards did, and instead kept the wand in hopes that one day one of their children might bond with it. They waited until each child turned eleven, the traditional age for a wizard child to get a wand, and gave each of them the wand to test, with plans to take them to Ollivanders if it proved unsuitable, as happened with their son. But for Meg, her grandfather's wand was a perfect match, and there was no need for the family to return to the wand shop on her behalf. None of the Aurum-Snapes were looking for significance in the colors of sparks let off by the wand, and were simply delighted that Severus Snape's wand, having waited so long, had found a new match in his granddaughter.