That's awesome that she was asked to interview to be a ski instructor. Understand that any extracurricular/team is a drain on limited time. I would assume that her ski instructor duties would be much more time consuming in the winter and probably mostly geared towards weekends. Really depends on whether or not the instructors do training during the week.
As for her team leader tracking her, maybe a current yuk on this forum could answer that question better. But ultimately, your daughter is responsible for keeping track of those commitments balanced against her academics and other duties.
Hope she is doing well. My son seems to have fallen into his grove now and is doing well. Not a superstar on academics, but a good all around student, and very motivated to do well.