Vesta was Jupiter's sister. She had three famous brothers, actually - Jupiter, Neptune, and Pluto. She had two very famous sisters - Juno, queen of the gods, and Ceres, queen of the harvest. Vesta herself was the goddess of hearth and home.
The goddess of hearth and home was certainly an important goddess. Vesta held a seat on the Roman Council of 12 gods, the Dei Consentes.
But she was not as important to the ancient Roman women as she was to the ancient Greek women. Roman women had far more freedom, especially under the empire. They were not always home.
But both Roman and Greek women took comfort in this powerful goddess whose job was to watch over their hearth and home.