Your friend has not done as well as. She\he expected to do in exams. She\he is upset and now blames the teacher for her performance..what you do 1 To help
her to get over a disappointed and to make forward. 2 to help her think about to improve her grades in future, and notblame others



May this help you-

Firstly u should check the paper and see that if teacher has checked everything according to the answer key.(There can be chances of partiality).
If the teacher has checked the paper right then u should encourage her to do well in next exams.
You can also give her ur answer sheet and tell her what mistake she had done.
If she is ur bestie,she would understand and would work hard.
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