推荐信问题

[align="left"]我想要交换时的一个老师的推荐信，不过那门课只有B+[/align][align="left"]这是她的回复[/align]
[align="left"]Thanks for your email. I would be happy to write a recommendation. However, I can only talk about your performance in my class - and since you got a B+ grade, I might not be the best person to write the letter. You might prefer to ask a professor who taught you in a different class.[/align]
[align="left"]Let me know what you decide.[/align]
[align="left"]我是不是没有必要找她写了。。。。感觉不会写好的，虽然她人很nice[/align]
[align="left"]另外交换时语言课老师的推荐信会有用吗[/align]