Sati after timeskip

Hello <3
I've been doing terrible lately, but I still found the courage to draw this!

It's Sati Rodrigue after the Tenrou timeskip, she didn't go with the other Fairy Tail members, which means she aged! But, why is she looking this evil? Did she turn her back on Fairy Tail? Is she with a dark guild now? Who knows  

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From now on, you will dance through heaven as a beautiful star
Rest in peace  
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Sati belongs to me (katomekux ) DON'T EVEN THINK ABOUT STEALING HER!

Fairy Tail (c) Hiro Mashima
Base: Cana
Sati: katomekux