@Akinna
I'm sorry about disapearing, my health's been up and down but I'm back now!
I just want to say that I had a really similar thing when I was young (though I didn't have your research skills!).
And your psychologist is right unfortunately.
If letting yourself feel your emotions is frigtening, maybe you could start off by making sure you're in a safe environment before letting them out?
Like maybe you could watch an emotional movie (with a happy ending) with your sister or mum?
For me, books were a really good way to let myself feel again at a pace I was comfortable with, and I could make sure I was feeling safe when I started reading.
