第三人称： first,you should be clam down.
second,think about thing.maybe you have something wrong.you cann't angry with her.it is not unfair.
third,write a letter to her,tell her your idea.
last,you will be good friends later. 自我角度：I am glad to hear from you but sorry to hear that you have some problems. You didn't get a satisfactory results in the examination.There is nothing to be worried.I believe that as long as you prepared carefully next time you will certainly be able to play well.As for the quarrel, I think there must be a misunderstanding between you and your friend. You two will return to good friends through further exchange.Everything will be well up.
Have a good day!
【基本上没有什么语法错误,也很简单,如果有什么地方不懂可以问我,希望对您有所帮助】