lady-in-waiting

A lady-in-waiting is a female personal assistant at a court, royal or feudal, attending on a queen (either if she is the queen regent or the queen consort), a princess, or a high-ranking noblewoman. Historically, in Europe, a lady-in-waiting was often a noblewoman from a family in "good society", but who was of lower rank than the woman on whom she attended. Although she may or may not have received compensation for the service she rendered, a lady-in-waiting was considered more of a companion to her mistress than a servant.