Sentence:  One of the few strokes of good luck Emma had had in recent days was the news that Tatiana Flint-Hamilton, her only real rival for top billing as 'most photographable girl' at today's event had decided to <WSD>swan</WSD> off to Sardinia instead, leaving the limelight entirely to Emma. 
Meaning of the word marked with <WSD> tags:  To travel or move about in an aimless, idle, or pretentiously casual way.