B&N Louisville's store manager maintains that she 'did not know' how to fill out a change of status form.

The form was marked "VOLUNTARY SEPARATION"
(This is the section just below the "CHANGE OF STATUS - FULL TIME TO PART TIME" area on the form)
The reason given for separation was "personal day"

FYI: Here's a sample copy of a Personnel Transaction Request form

This same manager has worked for the company for over 20 years.

Barnes & Noble maintains a national corporate help line answered in New York every business day for administrative and business questions from any employee, manager, etc... from any store in the country.