Pakistani family of 3 looking for a live-in full-time helper

We are looking for a full-time helper starting in the Tai Wai / Sha Tin area in October. We are a family of 3 with one teenager. We are looking for someone who can cook, clean, and do housework (including buying groceries, ironing clothes, and managing the house). Should be able to cook with little or no supervision. Can sign a contract immediately. The helper will have her room and bathroom. Salary negotiable.