"I did not threaten Hayley, I did not tell her to keep her voice down. I simply asked her to do the right thing," Ms Alexandra said. She added Miss Hammond breached her employment duties.
"Control of the information was lost when it was placed on Facebook," she said.
Earlier, a NZCU employee recalled checking her Facebook account in the days following the baking of the cake.
She was "upset, shocked and very disappointed" with Miss Hammond, whom she had known for 20 years.
"It wasn't funny, it was simply hurtful."
Miss Hammond cross-examined her old friend and said: "Would you agree you have an understanding of my sense of humour?"
The employee replied "yes" but later reiterated how "shocked and disappointed" she was.
The case continues today.