Simplify the following text for a Grade 13 native English-speaking person.
Original: On February 21 , 2010 , two days before the beginning of ladies ' figure skating competition at the winter Olympics in Vancouver , her mother , ThÃ rÃ se Rochette , died of a heart attack at age 55 at Vancouver General Hospital after arriving to watch her compete ; Rochette chose to remain in the competition and skate in her mother 's honor .
Simplified: On February 21 , 2010 , two days before the ladies ' figure skating contest at the Winter Olympics in Vancouver , her mother , ThÃ rÃ se Rochette , died of a heart attack at Vancouver General Hospital after coming to see her in the contest .