14 hours ago, Kerala said:By her own description she was bad at her job.
I don't read it that way at all. Sure, she had to learn, but don't we all? The mistakes she made were when she was in training. Later, her employers obviously thought well enough of her to promote her.
Also, I'd point out that carving and serving Beijing Duck is somewhat more difficult than carrying plates to a table.
But I don't think that is the most important part of her story.