Earlier today,
Jade Velicia decided to resign from the kitchen job. After her resignation, she approached lady Diane after she came back from the training ground, in respect of choosing another job for her. Unfortunately, they weren't any, as said by the Chief Maiden whom lady Diane summoned. However, there was a position of an errand girl.
An errand girl was probably the worst job someone could get, though it paid quite well. Errand girls ran errands for everyone, including maids and partisans who had specific places to work on. So, basically, errand girls were like maids for all.
Without much choices to make, it was either she served as an errand girl to all, or she could leave the Domicile.
Jade being an orphan with nowhere to go to, and not having any other choice, reluctantly, but mirthfully accepted the job of the errand girl. Besides, who would want to work with her with those awry skin of hers if she left....?