I did want to add this quote from another post about fragmented ego states.

Her best defense may be to maintain two distinct ego systems, one of which deals as best she can with father the rapist, the other with everyday living. The defense of dissociation permits the child to avoid thinking about the abuse so she can have as normal a life as possible.

When this sort of childhood starts early and goes on a long time, the ego states may accumulate very different memories, emotions, and behaviors. They may even have different names for themselves: one name representing the angry, hurt, sexually aware part, and the other designating the innocent child in her public persona.

A child growing up in a very sick family system faces a large number of insoluble problems, and dissociation may become the preferred way to deal with virtually every conflict the child faces. Thus, a system of dissociated ego states may arise, one of which does well in school, another is very athletic, a third feels a great deal of rage, a fourth can function sexually, and the fifth goes to church and prays a lot - thus fully expressing all the family values in one person without having to resolve any of the conflicts that divide the family.