I don't know if I have spoken much about Abuser Alters before but thought I might try and explain abit now.
To most outsiders it must seem a horrible concept to have alters inside who go around abusing other alters. Surely the system would want to work together and help each other out. That's good in theory, but you have to remember that this is a child, a young very helpless and lost child. "There are no safe places to go, no safe people to get them out of this, and there are horrific things this child must see, do and experience.
How does this child cope with the horrors of what they have seen and experienced. They have no control over it, there is no way to stop it, and they feel powerless to do anything about it.
One way to cope with what is happening, is to try and make yourself feel stronger, more incontrol. If you have someone who is like the abuser inside, then they are not a victim, they are not weak. They are just like the one who has the power, even though their power and strength is only ever used on others inside the system. In a very large way they are taking away some of the powerlessness the child feels and giving them a sense of strength. Like they are in control of something in their life. That they too have power. And yes these abuser alters do go around inside abusing other alters. It's not fair, nor does it help on the road to healing, but in truth, it is one of the reasons that system is even alive to this day.
How do you cope with the pictures in your mind of the horrific things you have seen .....you identify with the abuser, you think like them, you see it like them. Then you see it from a very different view. Yes it is about power and control. That's what abusers use. So to have an abuser alter gives the child/system a sense of power and control in a world in which they really have none.