The different 016 number could be any miscellaneous charge, perhaps for the $300.

Although in the past for OP, had the extra pages matter have become an issue, the wife could have obtained a second passport or a renewal passport from the Chicago Passport Agency. All of the forms are available online and can be filled out online, printed and brought with.

While one theoretically needs an appointment, just show up early (before opening time) and in a few hours either the second passport or renewal can be processed.

https://travel.state.gov/content/pas...s/Chicago.html