[Inara's been composed since she was imprisoned. She was awaiting her trial, expecting some legal hoops to jump through before she'd be let go and find the next sex ring to work in.
People have needs and they'll find their way of serving those needs with or without her. Better they live out their fantasies on nameless faces without families than people in their lives, right?
Inara started young, she was sold as a child and put into a field that she grew to love. Since then, she found this was the only place that she felt comfortable. Years passed and she finally got turned into a vampire. She could persuade people to do whatever she needed them to do. She worked her way to the top of Simon's scheme the way she had with 2 other schemes in different worlds.
She took the job with Simon and was paid handsomely, but she used none of it. She stayed with the victims, nursing them to health, caring for them, supporting them in the way she wanted someone to do for her. No, certainly she wasn't bad. She made lists for Simon, sure, but surely those people would have been taken by some other person some other time anyway. Surely.
Even when people are unkind to her, she treats them with grace. Even in captivity. They hate her and think she's a monster, but she knows she did a good thing. They could ask any of those "victims" and they'd agree.
When one of the Avenger's team members comes down to deliver her bloodbag she walks to meet them] Thank you, has anyone recovered my belongings from Fantasia? I'd like my jewelry.