Hi Miss C. I wanted to respond to you about the screaming ten year old. I had a similar thing once with a child part I was 'kind of' aware of but not entirely. I just wanted to tell you something I did that helped a lot with that, because it might be helpful for you to try too.
What I did with this screaming kid was talk to her in my head, all the time. Not expecting an answer or anything... but I talked to her like a parent would speak to a terrified real-life child, in a very calming soothing voice. I didn't know her name and she wouldn't give me one, so I told her I was going to give her a nickname that was special for her, and if she didn't like it it was up to her to let me know. (no answer, just screams). I talked to her in my head ALL the time... while cooking dinner, having a shower, driving the car, playing with my kid, everything. I showed her everything in my house (in case she was stuck back in time somewhere) and constantly reminded her she was safe and loved and that I would take care of her no matter what.
For a little while she just kept screaming, but then after a few days she stopped screaming sometimes and seemed to be listening (I talked real soft to her in my head so she had to stop screaming if she wanted to hear me!) then after a little bit longer she 'popped her head around the corner' (internally) to look at me every now and then. I responded by playing peek a boo, and got a few giggles.
So we built up our relationship like that, and pretty soon we were able to communicate with each other really well.
The thing that helped the most was, I think, allowing that part to trust me, and me showing her I was trustworthy by being consistent, and calm, and unafraid of her.
Anyway.. I was just thinking, when you wrote that a part of you was screaming and you weren't really aware of them much... I just thought that talking to her, without even expecting an answer at first, might help.