One day princess twilight decided to read a legend but ran into flash while reading it and he looks sad when he sees the picture of him and his little sister. Now I'm not giving spoilers to what happens in part two but I will tell you the legend of the stone filly ." there was a filly who loved to perform experiments but never got her cutie mark because on her twelfth birthday something tragic happened after the party as she was walking home a thunder storm that the pegisi couldn't control started and she was separated from her brother who was found that morning by a unicorn." but the filly was no where to be seen but every night if you listen close you can hear her cries for her brother coming from the everfree forest. ...where most pony's believe she was taken into by wild animals and eaten. But one of her friends dissapered as well all that was left was a stone filly statue some say that you can hear her sing in hopes her cousin will come back and get her or that she wouldn't be stone forever
No pony knows what really happened except the filly's them selves and their friends who seemed to know more than they told them they knew.one filly who was delusional said that they accidentally turned her to stone was she telling the truth know pony knows. Was there a motive to the dissaperinces did some pony abduct them or did they fall victim to the everfree forest it's a mystery no pony can solve not even the best detectives could solve it. there's just not an explanation for it. The filly's were assumed to be dead and the case closed though the brother and cousin still believe that they are out there. But only one filly's name is known its gemstone the other went by her Nick name ava know pony knows her name but her brother flash century and gemstones cousin rarity. Okay back to the story twilight asked flash about his sister and" he said she was the only family he would have had if she was still with him because their parents died in the storm looking for them" and twilight apologize for bringing it up but he said it was okay and he had to talk about it sometime". She also talked to rarity who was sad sweetie bell wouldn't get to meet her cou by ñsin gemstone because she was lost or dead even though she said it she refused to believe that she was dead even if it was the last sensible answer in equestria she still wouldn't believe that her cousin was dead . but she did believe that the filly that was said to be delusional wasn't delusional at all and was trying to tell the truth to them but they just brushed it off like it was her imagination. Rarity believed that her cousin was turned into stone and used as a statue for the fountain that broke but was fixed . flash believed his sister was alive in the everyfree forest somewhere maby with zacora after all zacora did live in the forest without a problem. But they couldn't get fluttershy to look in the forest she was too scared of the plants that could eat her to go in and so was every pony else . so he just gave up on looking for her but not rarity she did not. And would not stop looking till her cousin was found and returned to her parents no matter what any pony else thought .
This is my first story and I hope you like it please comment but try not to cuss in comments please just don't OK ?
Conceptually, the idea seems interesting despite the fact that legends are usually the stuff of decades or centuries rather than a few years. As defined by google a legend is "a traditional story sometimes popularly regarded as historical but unauthenticated". This more of a rumor or perhaps a tale/ghost story kind of thing. It's easy to see that it could be that way for Ponyville, since aside from Rarity, few people probably know/knew Flash or his sister.
That said, to be honest it feels like the summary of a story, rather than a story itself. The chief problem is that what you've got her isn't so much a story as a giant pile of ideas/thoughts dumped onto the page in a very stream of consciousness manner. That's a fine approach for getting it out of your head, but it really needs to be refined and worked on after that. For what it's worth, you could probably write a couple chapters easily just by expanding on what led to Twilight reading up on this and her conversation/interaction with Flash. And then of course, you essentially have the bare bones of a separate conversation with Rarity at the end there.
Additionally, your story has a number of issues including spelling problems and proper nouns that should be capitalized, as well as some examples of poor writing. See my thoughts and comments below.
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Princess Twilight
Flash
Author note? If so, that's kind of immersion breaking.
There was - Once there was? - There was once?
This is something of a run-on sentence, among other issues with it. To start with, there are five different thoughts going on in there:
... filly who loved to perform experiments
... never got her cutie mark
... on her twelfth birthday something tragic happened
... as she was walking home a thunder storm that the pegisi couldn't control started
... she was separated from her brother
... who was found that morning by a unicorn.
Thunder storms usually don't just start, although incautious ponies might be caught in one which had been brewing/forming for some time.
Also, her brother was found, by a unicorn, on the morning of the day that she was at a party and waltzed into the path of a thunderstorm?
pegasi
where most ponies believe she
one of her friends disappeared as well
except the fillies themselves
delusional? confused? delirious? deluded? crazy? they? Is they the other fillies or something/someone else? Was that a regular state of affairs for that one pony, or was she one of the fillies that was with the lost pony the day that she supposedly turned into a statue?
One filly, who was delusional, said that they had accidentally turned her into stone. Was she telling the truth? No pony knows.
But only one filly's name is known, Gemstone, the other went by her nickname and no pony knows her real name except her brother Flash Sentry and Gemstone's cousin, Rarity.
...
Flash believed his sister was alive in the Everfree forest somewhere, maybe with Zecora; after all Zecora did live in the forest, on her own, without a problem.
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The long and short of this is that you really should run spellcheck over stuff before posting/uploading it and make an effort to properly spell character names. Also, you should remember to capitalize the first letter of names since they are proper nouns. Also, I think your grammar could use some work.