I just finished the battle at spellhold and all my characters died but my main one. when i brought everyone back to life Jaheira wont come back. Does anyone have any ideas how i can bring her back, i dont mind cheating to get her back. The romance was just starting to work.

Jaheria likely received a crushing death blow that chopped her to bits, or was disintegrated so you can't raise her. You can't even cheat to restore her. Maybe you can wish her back, but it seems doubtful.