Freshman trying hard but failing please help

Susan, Mum —

My teen is smart and got in to one of the best STEM High Schools in the state. A blue ribbon school. However, the course is at a very fast pace, she enjoys the classes, but not able to make the grades. She has been failing almost all her subjects. She is a freshman, and after the first 3 months, her GPA is at 2.25. She is upset and wants to …