Trying to figure out our roles...

I'm (21m) making a list of everyone in our system of our roles so that I can better grasp what's going on in our inner world. There's one person I can't quite place. To my knowledge, she rarely co-fronts with me (I haven't fully gone away except maybe three times in the last decade). She only comes out if I need help performing certain tasks such as cleaning or working. Otherwise, I have no idea her role in our system, and my gatekeeper is very wary of what she reveals. Does anyone have any ideas?