My internal dynamics are very similar. It's where my most traumatic experiences were - at 5, adolescence, and during my first breakdown. The feelings at these times were walled off to protect myself. Now I'm opening them up.
My protective persecutor developed to protect me from experiencing the degree of helplessness and powerlessness of the abuse etc.

Perhaps the body is that utterly depressed, desolate and despairing part of you.