Such questions are made for enhancing your creative writing skills and so, you should attempt them on your own. However, here are a few points that will help you frame your answer.
discuss and decide to console your friend with hearing disability that it is not uncommon
you can let your class teacher know about those students who tease her
request your teacher to scold those students
ask your friend to talk to her parents about her hearing disability.
she can use hearing aids, which will help her hear better and clear.