When I have a problem for example telling my therapist things I write it out then either tell her or I give her what I wrote. I do the same thing with my friends if I come across something I don't know how to word it I write and then tell them what I wrote or show them my poem about the issue. Ive done that too when I was working or vollunteering, speaking in front of classes and so on. Even people on tv have a written way to remember what they want and are supposed to say (telaprompters). many people write down things so that they don't forget to discuss whatever it is so it is not abnormal at all to write what you want to say and then say it or let the person see what you wrote. Since writing and so on does "sooth" you maybe it will also help you to start communicating with other people too. hang in there