Susan, try removing " (quotation marks) from your query.
Despite ArGis Query Builder uses those quotations marks, and there seems to be no problem verifying the expression using them, when working with File geodatabases file names need not quotations ArcGIS Help (10.2, 10.2.1, and 10.2.2)
Best of luck!
Had the same issue. Originally I had my data in SDE and even if I removed the quotation marks it didn't work for me. When I moved my data to a FGDB and removed the quotation marks it did work.