How To Discuss Middling Performance From People Who Report To Me Day to Day?

Background, I have a few years experience and I am responsible for lightly supervising our entry level employee. She is a decent worker, but often turns things in just a little late, or will mess up certain tasks. We both report in to a director, and I mainly try to shield the entry level employee when they are making mistakes.

There was a light incident where she messed up, so now it's come to a head. What is the proper way to talk about this when I'm talking to our director? I guess, mainly, I'm wondering how honest I should be.

FWIW, I know she (the entry level) will not be fired, nor should she be.

usa jobs
usa jobs resume
usa hotel jobs
usajobs
usa jobs federal government
usa job in ksa
usa jobs
usa jobs login
usa jobs gov
usajobs.gov
www.usajobs.gov
usajobs.com
usajobs
usajobs.gov official