I'd agree - she's losing Black Swan momentum in terms of appearances. In terms of magazines, she's still right up there, especially with Dec's cover of GQ (1 of 4 covers). I'm pretty sure, too, she was the only reaaaal celeb at that Land Rover/jaguar event. Regardless if that's a publicist's job, none of those events are her style.
For instance, she didn't even go to the MET this year, fresh on the heels of Black Swan acclaim which is kind of a big no-no. But she did LAST year in Vera Wang. As important as exposure at some of these events are, like the MET (possibly my fave!), and this week's the MoMa Film Benefit or the Worldwide Orphans Foundation’s Seventh Annual Benefit Gala, where big names like Emma Stone and Olivia Wilde attended. Those two attend everything and to be honest, I'm getting sick of them because of the overexposure. So even though some lack of appearances may be a "miss", she is busy filming and/or getting her life in order the few days she does have off to be back in LA, and when she does have off, it's not her style to be going to these events.