Freaky

[Dixie]

Long story short:

I was trading Pokemon with my friend, and she told me that she would give me her Latios for my Kyogre. I said yes, and we traded. I went to my PC in the game(you use it to withdraw and deposit pokemon) and I dicovered that my Latias was gone. I looked everywhere; my PC, my friends PC, and my pokedex. She was gone. What is weird is my pokedex still had info on her. What happened to her and how do I get her back?

EDIT:I had Sapphire and she had Ruby. I used a Game boy advance SP and she used a game boy advance