One more quick question, please: Do I just keep going forward with the divorce arrangements (finances, etc.) assuming it's going to happen? Thanks.
Yes, but I certainly wouldn't lead the charge, if being D'd isn't what you want.
There's a difference between "commitment" and "compliance." You do have to comply, but your wayward wife is the one committed to running hell-bent away from her marriage and family. Let her lead the D charge.