Complex sentence: The singer had skipped performing in Australia during her last five concert tours, until the Rebel Heart Tour (2015--16), so she created the show for her Australian fans since they had waited so long for her to perform.
Split into simpler sentences: The singer had skipped performing in Australia during her last five concert tours, until the Rebel Heart Tour (2015--16). So she created the show for her Australian fans since they had waited so long for her to perform.