Memory of Trees - Frankly, I don't think you need to depend on dialogue as much as you may think you do. I've reread your edited post, and I think it is a stronger post without the added conversation. Of course, dialogue is important as our characters are bound to communicate with one another. If you come to a post where you want to interact with another character, read through the character's bio and the author's prior posts. I know it takes a little time, but I do this constantly. This way you are less likely to make mistakes with the other characters. You will become more comfortable with the boundaries as you write more. I hope this helps some. Feel free to PM me if you have any more questions.
I will give a little time for reaction to the "uninvited guest" and then I will have Marcho get us back on the road. Should be interesting...