I take anything the papers say with a pinch of salt, so I am not going to think badly of her.
Even if she actually did say all that, there is no way it is sour grapes. She may well be sour with Louis and she didn't seem to want to have anything to do with him after the result but she is not pretending that she didn't want to carry on in the competition or that there was anything sour about the grapes that is winning the Xfactor.
The comment about going to deadlock is bollox. The judges shouldn't vote to go to deadlock. Going to deadlock should merely be a possible result of the judges vote. If she had said this she is in effect saying that
Louis should have voted against Kitty, regardless of whether ir not he preferred her.