Since this is an anonymous question, we do not know the gender of the teacher. We don't know the class also.
I would first suggest that if you are a male teacher, please do not try and resolve this on your own. Bring it to the notice of your prinicipal or the vice prinicpal and involve a feamle colleague also.
You never know when and how things backfire, despite your honorable intentions and desire to help the student. Please allow some time to pass. It is good that she has volunteered to stay away for these issues. Do not try to counsel the boy or the girl alone. You can certainly try doing it with the help of another colleague. IF there is a career counselor at your school, you can involve them also.
Initially try to focus on the importance of education, a good job and decent salary and the difficulties people face to achieve this. Then once they are the right age, they can think of these activities. Keep them occupied with talent/skill development, grooming for improvement in education to deviate their attention. Whatever is planned it should be over a period of time with regular assessments.
Being a teacher, it is difficult not to get personally involved in such issues, but you need to tread carefully