Snugs view was a narrowly stated one...you broadened it to call it her view of representative democracy. Her point was that he stated his positions when he ran and that to go beyond that and demand he toe your every line because you voted for him is not fair.
In the case of Laura, even though she has come off as less than enthusiastically supportive of some of his socially conservative positions (said guardedly, because she's so diplomatic its hard to tell), Laura is not the President and she will not call the shots on socially conservative positions he has taken.
I would remind everyone who thinks her words rule the day as if the President himself said them that they are very mistaken.
That's technically true, but I have a hard time believing that Laura is the kind of wife who would stray from her husbands positions in such an openly political way. They are close enough (Bush and Laura) to warrant suspicion that her words are a reflection of his position. But you are correct, perhaps she was just being a wayward wife for a day, or they have some kind of agreement that she can actively promote ideas contrary to his when interviewed by the press. I just doubt it.