The one thing I am hoping is that as she starts the process of changing everything to her parents address and moving out from under my financial support she will start to have a change of heart. I know that can be a huge shock for a lot of people.
More than likely she is going to move on to her parents cell phone plan, auto insurance, etc. She likely still needs to perform a change of address at both the USPS and DMV. She still won't be truly independent and supporting herself which she said was one of the main goals of the divorce.
She started the process of getting a new bank account, but has been having all the mail come to our house still.
Stop mind reading and forecasting and focus on whats really important. No, she probably wont 'wake up' one day soon. Looking for signs and trying to read the tea leaves on when that might happen or not is a waste of your energy. Where the mail is going is just a bit of logistics that surely doesnt matter to her one way or another.
Go out and live the life you want to live for you and your son. Where can you be a better partner, father, friend, man? Focus there!