Simplify the following text for a Grade 6 native English-speaking person.
Original: When she was 15 , her family moved to Rosarito city , Mexico and then to San Diego where she attended Bonita Vista High School and Chula Vista School of the Creative and Performing Arts .
Simplified: At 15 , her family moved to Rosarito B.C. , Mexico . Later , they moved to Chula Vista ( a suburb of San Diego ) .