Spoke briefly with my friend through e-mail last night. (One of my replies: "Thank you for your message. I wouldn't be surprised if replying was something you did not want to do, but you reached out, and that's a good sign." Please let that continue to be a good sign.)
Otherwise, I've heard nothing from my friend. So I have to just keep hoping, and keep my friend in my thoughts. (I think it's best for now to be vague about which friend I'm referring to.)
7:00 a.m. addition: My friend's cell phone inbox is full.