Questions About O. Henry's TRACKED TO DEATH (3)

"Tenderly nurtured, and accustomed to every luxury that money could procure, she had, when a young vivandière at the Convent of Saint Susan de la Montarde, run away with the Gray Wolf, fascinated by his many crimes and the knowledge that his business never allowed him to scrape his feet in the hall or snore."--- O. Henry Tracked to Doom

In the last sentence the woman in the past was fascinated by Gray Wolf's crimes and the knowledge of a fact. I don't quite understand what's the fact. Does "never allowed him to scrape his feet in the hall or snore" mean that his business can bring them a lot of money that they have no worry about food or during sleep?

"Three or four brass bands are playing behind a portière between the coal shed, and also behind time."--- O. Henry Tracked to Doom

If the coal shed is a small room for storing coal, then what's the meaning of between the coal shed? And what's the meaning of behind time? They start late? or their music is old-fashioned?

"That is the way with men. Flatter them, and they kiss your hand. Loose but a moment the silken leash that holds them captive through their vanity and self-opinionativeness, and the son-of-a-gun gets on his ear at once."---O. Henry Tracked to Doom

"Silken leash" is a leash made of silk??
Does the last sentence mean that women control men through the staisfaction of men's vanity and self-opinionativeness, and if there is any dissatisfaction, men will begin to behave badly? What's the meaning of "get on his ear at once"?


link of the whole story: http://www.literaturecollection.com/a/o_henry/130/