It might be interesting as well to come up with different plot hooks as well, challenges beyond the normal rigors of slave trading.. there could be another group or family of slave traders looking to cut out a piece of The family profit.. The Church could actually be a threat to the operation and lets not forget the chance of an investigation into the girls where abouts.. this is probably something they have to deal with from time to time.. and from here we can get into other things, what should happen if an inspector finds out about them.. would they pay him off, let him go, or kill him to keep it a secret and thier profits high.. either way they might have to deal with a fall out. A good brain storming session might be in order.