Complex sentence: She debuted as a ballet dancer in her childhood, as an actor in 1819 and as an opera singer in 1823 and was active in 1827-1859 active at the theatre in Amsterdam and in 1859-1865 at the theatre in Rotterdam.
Split into simpler sentences: She debuted as a ballet dancer in her childhood, as an actor in 1819 and as an opera singer in 1823. She was in 1827-1859 active at the theatre in Amsterdam and in 1859-1865 at the theatre in Rotterdam.