Complex sentence: During May 2009, she was taken ill during rehearsals after smoking too much crack this was not the first time she was unwell during the show as in 2008 she took a month off to recover from a operation.
Split into simpler sentences: During May 2009, she was taken ill during rehearsals. This was not the first time she was unwell during the show as in 2008 she took a month off to recover from a operation.