~6 years later…
It was only a matter of time before Twilight's friends would hear about Snowflake. And hear about her they did, actually, Snowflake's bestest friend out of all of them was Pinkie Pie. Snowflake wasn't quite as bubbly-bouncy as Pinkie, but she still liked having fun and baking sweets. Rarity taught Snowflake (and she wanted to learn, for that matter) how to be a proper mare, she got very good at daintily holding a teacup and taking little, lady-like sips. She learned how to be nice and kind and compassionate from Fluttershy, although a pony as introverted as Fluttershy isn't quite the best teacher. However, Snowflake understood completely and actually helped Fluttershy become a little less… well… shy. Rainbow Dash, with her heavy focus on flying and Snowflake's lack of wings, didn't pay much attention to Snowflake. Applejack helped Snowflake along however she could, but she had little experience with dealings in royal matters. Twilight was almost a foal-sitter to Snowflake, taking care of her. They even used the Sunshine tailshake from when Twilight had been a little foal. Since Snowflake was pretty much, and for all practical purposes, Luna's daughter, they outfitted her with some royal clothes (so she wouldn't run around naked like anypony else would).
Rarity had absolutely insisted that she make Snowflake a dress, though she had Snowflake model directly as none of her mannequins were even the slightest bit useful in this circumstance. Snowflake's casual, wear-everyday clothes included a slightly altered version of the Princesses' signature necklaces, which was morphed into a quasi-sports-bra thing to fit her form, made of alluminite and lined on the inside with white silk. In the center there was a purple gem, the same cut and type of amethyst that sat on Celestia's necklace and crown. They had a crown made for Snowflake as well, and although it wasn't nearly as fancy as her Aunt Celestia's or her foal-sitter Twilight's or even her mother Luna's, it sufficed. It was designed similarly to the one that Snowflake herself had designed when she was 5, in actuality. Since nopony knew Snowflake's actual birthday, they decided to make the day that Luna found her on the doorstep, May the 7th, her birthday. 7 is considered a lucky number, as it was explained to Snowflake, because it's how many limbs the alicorns have. Four legs, two wings and a horn. "Like mum?" Snowflake asked. "Like your mum Luna, yes," said Twilight.
And so it was around time that most ponies would get their cutie marks. Somewhere between the ages of 9 and 12, depending on the pony, some as early as 7. But Snowflake was 10 years old, approximately, and nopony was sure what her special talent was, if she could even get a cutie mark since she wasn't exactly a pony. "I hope I get a cutie mark soon," Snowflake said, "I don't wanna be a nopony." "Don't worry," said Twilight comfortingly, "You won't be a nopony. You'll be special no matter what." "Because I'm the only… whatever I am… in all of Equestria?" said Snowflake, hanging her head, "Yeah, I know… I'm a freak." "Who told you that?!" exclaimed Twilight. "Some… ponies…" said Snowflake. "Well, tell them that Princess Twilight Sparkle, the Princess of Harmony and Magic, sends this message," said Twilight, "I'll turn you ponies into cacti if you don't behave yourselves!" Snowflake giggled, "I'll tell them that. Thanks, Twilight." "You're welcome, Snowflake," said Twilight.
"Sunshine, Sunshine," Snowflake started, marching in place.
"Ladybugs, awake!" Twilight continued, they both put their hooves/hands over their eyes as they crouched down, then they pulled them away.
"Clap your hooves and do a little shake!" they exclaimed in unison, then they erupted into a giggle fit and fell onto the couch.
~A little later…
"Princess Celestia?" asked Twilight, knocking on Celestia's door. "Yes, Twilight?" said Celestia as she opened it. "I need to speak with you about some… things," said Twilight. "Come in," Celestia announced, Twilight walked inside and she magically shut the door behind her. Twilight trotted over to the couch and sat down. "Snowflake wants a cutie mark," Twilight announced. "Is that even possible?" asked Celestia, "You told me nothing of it when you were back from that alternate world…" "I don't know if it's possible," Twilight said, "And that's what's got me worried. However, I think I've got a solution to this. Remember the Archives?" "Yes, what about them?" asked Celestia. As of recently, she'd started pulling her mane back into a ponytail, and it actually made her look slightly less majestic and regal. Actually, the Princess had acted much less like her usual self since Snowflake had come.
"The archives have some ancient texts that could help us out with this, maybe there used to be creatures just like Snowflake a long time ago, and now there aren't," Twilight explained. "Nice, Twilight!" said Celestia, sounding vaguely Pinkie-like, "So, we're going to the archives?" "Yep!" said Twilight. Celestia paused for a moment, then she said as she bounced off the bed, "Okie Dokie Loki!" Twilight giggled a bit as she thought, "She's gone nuts…" But she followed Celestia as they bounced down the halls and toward the Canterlot Archives. A little ways down the hall, several of the guards saw the two Princesses acting like little foals, and one said to the other, "What the…" Then the other one said, "I don't get paid enough to deal with these shenanigans…"