假设你是小王，你的笔友Kate给你来信。请你针对信中Kate遇到的问题进行回复，给她提出建议。
Dear Xiao Wang，
How are you?
I am having trouble with my deskmate Jenny at the moment. Last week，we had a maths test. The test was important and everyone had prepared for it except Jenny. During the test，she asked me to help her. I refused and didn’t let her copy from my paper. As a result，she failed the test. She is angry with me and hasn’t talked to me since then. Now I don’t know how to deal with this problem. Can you give me some advice?
I’m looking forward to your reply.
Yours，
Kate
词数120左右(开头与结尾已给出，不计入总词数)。
Dear Kate，
I’m sorry you are having trouble with your friend. Here are some tips that may help you.
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Best wishes.
Yours，
Xiao Wang