What does the last sentence of the passage mean?

Still, it was strange that they should have come to her while yet so young; more than strange, it was impressive, interesting, pathetic. Not guessing the cause, there was nothing to remind him that experience is as to intensity, and not as to duration. Tess’s passing corporeal blight had been her mental harvest.
What does the last sentence of the passage mean?
【正确答案】：

IT MEANS THAT THE CORPOREAL SUFFERING THAT TESS HAS EXPERIENCED MAKES HER SPIRITUALLY MATURE BEFORE HER AGE.

【题目解析】：文章最后一句话意味着苔丝所经历的肉体上的痛苦，使她在未成年之前就已经在精神上成熟了。