She's not a glitch. She was a glitch when King Candy was ruling and had her away from the main code. After all the game got in reset, everything was okay again and she was again the character she was supposed to be: the princess and ruler of the game. Though she glitches, those are her super powers. But that doesn't means that she can't leave the game. She's no glitch. I dunno if I explained it myself well ñ-n;;.
From what I saw "Wreck It Ralph" seemed to be following the standard video game story arc. Ralph uncovered the truth, brought down the boss and rescued the princess. I'm not sure if anyone else noticed that but it was just pretty clear to me.
WAIT.
HOW THE SALAMANDER IS VANNELOPE GAME-JUMPING?
SHE'S A GLITCH, AND GLITCHES CAN'T ESCAPE THEIR GAMES!
IT'S EVEN SAID IN THE MOVIE!
From what I saw "Wreck It Ralph" seemed to be following the standard video game story arc. Ralph uncovered the truth, brought down the boss and rescued the princess. I'm not sure if anyone else noticed that but it was just pretty clear to me.