Dear Mme. Secretary,
I know you will be missing your mom this 
year.  Every time your birthday rolls around I have always been thankful
 that she gave you to us.  
Thank you for all the hard work 
and long hours you dedicate to your job.   You deserve a perfectly 
lovely birthday.  Have a wonderful 65th and many, many more.
  
Appreciatively,
 Still4Hill