Yikes!!! I'm off dealing with a broken water heater and come back today to read about your wife changing her account.
I'm glad to hear you are talking with a lawyer, and starting to read and research books on divorce. This will help you be more prepared if necessary.
You've mentioned that on your income alone you wouldn't be able to keep the house, if things get financially tight, do you have an extra room that you might be able to rent out? I know that's something I considered.
Although I was prepared to sell the house once the divorce was final. In a way I looked forward to it because I wanted to let go of the memories and get a place that would be all my own (even paint the master bathroom pink and make it super girly!!!).
There is no arriving, ever. It is all a continual becoming.