The Imperial family lived in São Cristóvão palace but during the summer (from December to April) went to Pedro II's palace in Petrópolis (nowadays the Imperial Museum of Brazil). Isabel lived an almost completely secluded life from the outside world, far away from the eyes of the Brazilians. She and her sisters had a few friends. Three of them would remain lifelong friends of Isabel: Maria Ribeiro de Avelar (whose mother was a childhood friend of Pedro II's sisters), Maria Amanda de Paranaguá (daughter of João Lustosa da Cunha Paranaguá, the 2nd Marquis of Paranaguá, a member of the Liberal Party and later Prime Minister) and Adelaide Taunay (daughter of Pedro II's former teacher Félix Émile Taunay and sister of Alfredo d'Escragnolle Taunay, Viscount of Taunay). The sole male child who was part of Isabel's all female group was Dominique, the only son of the Countess of Barral, who was regarded by the Princess Imperial and her sister as "the younger brother they never had".