Not sure it's insatiability, exactly.  Belle used to be in a gang, and has missed the safety and security it brought.  Now she is in a gang again.<br/><br/>I've never been in a gang, but back in my bartending days I worked with several people who had been.  They painted a rather unromantic picture of the life.  Women in the gang slept with pretty much everybody in the gang unless they were claimed by someone powerfull.  It was how they built relationships, got status - such as it was.  Belle is far too independent to be claimed, but, well, you do what you know, right?<br/><br/>Most of the characters seem to be shaping up as idealists to one degree or another.  Talanna is there because she was ordered to be.  Rilyth is there because Daniel is, and wants to watch the fires we are about to set burn because they will be pretty.<br/><br/>Belle is there because the Boss saved her from slavers.  She is not an idealist at all, she's a rather ruthless pragmatist in fact.