Is it from this site? If so, you should ask in the inside summary or A/N if the author could tell you their name. If not, someone from here may have read it and know who wrote it, so you can still give credit :) you did the right thing by posting this question, and you should leave this question post up incase the original author sees their work and gets pissy- that way you can show that you weren't claiming credit and we - well,I- told you to :)
Author's response
thank you for that. i dont know their real name or writers name and i dont know where i found it it was so long ago when i did and the link was on the my chemical romance zone 6 section but i will be sure to give full credit if the writer does ever find out. i dont repost other peoples writings