First, understand their need for quiet and solitude. Then, communicate with them in a gentle and non-intrusive way. Also, respect their boundaries and interests.
Well, first of all, try to understand the reason behind her sadness. Maybe have a heart-to-heart talk. Then, do something nice for her like getting her favorite treat or planning a fun activity to cheer her up.
Well, first of all, show the baby's basic needs like feeding and changing diapers. Also, depict a warm and nurturing environment. Add some cute moments of play and interaction to make it engaging.