Au pair
Person, usually young girl, travelling from one country to another to live in a family and do household work, with childcare as the main work task
An au pair is a person working for, and living as part of, a host family. Typically, au pairs take on a share of the family's responsibility for child care as well as some housework, and receive a monetary allowance or stipend for personal use. Au pair arrangements are often subject to government restrictions which specify an age range usually from mid teens to late twenties, and may explicitly li... Wikipedia