Who is Servilia from Caesar's Women and what is their importance?

Sevilia, descended from the ancient Servii family, is portrayed as a highly intelligent and ambitious Roman aristocrat. Married twice, her first husband was Brutus's father Marcus Junius Brutus the Elder, who was killed by Pompey. Her second husband, Decimus Junius Silanus, was a handsome but frail senator in Rome. Servilia deplored Silanus' weakness and ran the household. She was a domineering woman, known for her cruelty to her slaves and obsessive control over her son. She is determined to make Brutus a powerful and influential Roman. As a woman, Servilia cannot attain political greatness, thus, she grooms her son for it. All her attention is focused on him and she completely dismisses her daughters. She even poisons her brother Caepio in order to enhance Brutus's wealth and status.