Oh, Delita survived. You already said why - the game and his struggle would have had no point if he just died at the end and the squabbling over the throne resumed. We also know he survived because at the beginning of the game AJ Durai talks about Delita's "long reign." It's not confusing, you just have to think about it.



I can understand why Ovelia did what she did. She has no reason to trust Delita. He has never shown himself to be anything but a manipulative murderer, completely indifferent to the well-being of anyone who stands in his way. There was no reason to believe that he wouldn't take the first opportunity to get rid of Ovelia now that he'd gotten what he wanted from her. She acted out of self-defense, believing she was expendable to him just like everyone else. How much would YOU trust Delita, especially if you were a terrified teenager utterly alone in the world?



As for Delita's explanation of how she died, he's pretty good at lying and twisting things around to work for his benefit. He could have hidden her body and staged some kind of bandit attack, blamed it on remaining dissidents, pinned the murder on some poor slob he kills and calls an assassin, found some blonde girl to play her stand-in for a few years, or even taken the chance on telling the truth. This is a dude who has survived the entire game by playing people against each other. He knows how to lie.



The point of the ending is that Delita won, but he lost. He has the throne but he's alone. He has the world but his soul is gone, and no one is ever going to love him.