Under coof rules the bank will still go through with foreclosure. It will probably be nonjudicial. The trustee will identify the current owners of record and learn Bob is deceased. They will then try to learn who Robert Chandler of 14 Branchland Court is, and who is heirs are. They then have the job of identifying the heirs, and fortunately their particular deadbeat is the most documented person in history. The owners will be sent certified Notices of Sale, and the house will be sold at least 60 days later, and at least 75 days later if they have other liens. The house will be sold, and it will be on the buyer to get possession. If by that time Chris is serving time and Barb has been permanently institutionalized then I don't know if they would even need to evict. They may be able to treat it as abandoned.
If Chris' trial on September 16 is a prompt smackdown then the Tugboat will end after October 16. The mortgage will go into default and thar she blows.
If a local wants to stop by the Clerk of the Circuit Court at 22 Court Street Stanardsville, VA 22973, get a copy of the deed at book 126 page 207 and if possible any other document referenced by book and page in that document.