Serial Number Key Problem

[Renzco]

So near December, I bought Amnesia Dark Decent as a gift from my Aunt. Needless to say, I loved that game but didn't quiet finished it. I had the game on my Aunt's laptop and I wasn't able to finish it because we had to go home.
So today, my Aunt came to visit me and I wanted to play the game so badly. I started up the game everything went smoothly until it asked me for the serial number. I asked my Aunt to look into her email inbox to check for the inbox. Problem was, she deleted the the message that had the serial code in. Straight to the point, I lost the serial code message and need it to be re-emailed to my aunts' account again.
Her email is
We bought the game somewhere near December as a Christmas gift so I'm not pulling on anyone's strings here.
Thank you.