英语翻译

英语翻译
我在做英语阅读理解时,其中有1个问题是what was turn about mary when she was 14?我不是很明白这个句子的意思,其中这个题目的答案是：The most important reason for her going to the studio was that she wouldn't like to stay at school.
原文中提及：Mary她一开始是以为自己不愿意留在学校，所以才去studio；后来然而她发现她自己真的喜欢表演。