That's a very good move, to get information on what the legal aspects will be. Regarding your age, I just want to share that I started to become aware of the drinking issues in my own marriage when I was 50. I didn't want to be starting over at 50, and so I swept things under the rug and resisted starting my own recovery.
Want to know how that worked out for me?
I ended up starting over at 55 instead. Yep, great idea on my part...
Getting the facts is a good place to start.