Simplify the following text for a Grade 8 native English-speaking person.
Original: Ã lisabeth ThÃ rÃ se died at the Palace of Venaria aged 29 , having fallen ill with puerperal fever after childbirth . .
Simplified: Ã lisabeth ThÃ rÃ se died at the Palace of Venaria aged 29 , having fallen ill with a fever after childbirth .