I can't say if this is good advice or not, but if you want to make the divorce "real" for her. You can start letting her have more financial responsiblity for herself and stop paying any of her personal bills. Another thing that helps this hit home is to take her off any joint accounts (open a new one in your name only and stop paying money into a joint account... my husband did this at the beginning of the divorce). If she asks about this VERY NICELY explain that with the divorce you will both need to start financially separating assets. Make it sound like you are doing her a favor and helping her get the divorce going. You want her to be happy and want to help her along, yada yada...
I don't think of this as pushing divorce along. There are plenty of other things you can do to slow it down. I let my attorney know I wanted it slowed down as much as possible. Also, on other paperwork I was extremely slow completeing it and sending it to my attorney. Slowing it down will help you in many ways; it gives time for reconciliation, time to financially protect yourself and ensure she's making enough money to reduce your potential finanical burden, time for transitioning and healing, etc...
Don't expect anything from MC and don't seem too eager to go. I think it's a good sign she wants to go, but my husband offered to come to one of my C sessions and he spewed a lot of ugly stuff at me. It was pretty upsetting. Just remember, when they are in divorce mode they aren't themselves and will say things to push you away. The chances are higher at this point that any turnaround is going to take at least a few months if not more.
There is no arriving, ever. It is all a continual becoming.