Final answer:
The mistress calms down the baby by providing comfort and care through gentle gestures and soothing words.
Step-by-step explanation:
The mistress calms down the baby by providing comfort and care. She uses gentle gestures and soothing words to calm the baby's fears and anxieties.
For example, in the text, the mistress pulls up the child's socks and smooths her hair with a calming tenderness. These actions demonstrate the mistress's nurturing nature and her ability to make the baby feel safe and loved. By creating a calm and comforting environment, the mistress helps the baby relax and feel secure.