There is a Maths teacher in the UK who went public about his stutter - first in his class, then his school, social media and finally on national television. He is a complete inspiration to his students, other teachers and anyone who feels they can't even attempt to train in their dream job because they stutter. I would really encourage you to speak to your teacher. If she could speak about her stutter to the entire class, she would raise awareness and maybe someone else will find the courage to come out.