So sorry that you are having to go through this.
I have had 3 mmc, all medically managed and the babies had all stopped growing at about 12 weeks, so smaller than yours.
I have to say that peanuts account is prety much the same as my experience. I am relieved to hear that someone else found the hospital experience 'almost restful', as that is how I would describe it. I was there for something awful, but it was being managed, I was being looked after, and I could totally focus on what was going on.
On each occasion I knew when I was pushing the baby out, and I was glad that I had some time to be alone with them them before I called the mw to come.
Twice I had the problem of the placenta not coming away, and it had to be manually removed, which was probably the worst part, but you can have as much pain relief as you need at any time.
I would advise taking in chocolate, juice, books and magazines, as it can be a long day. Also give yourself plenty of time to rest in the days that follow, as it can be pretty uncomfortable, and you need time to start to come to terms with it all.
Take care, and I hope it is as gentle as it can be. xxx