My son also estimates that he spends about 3 hours a day with workouts. As with your daughter, the personal care is a significant time commitment. Getting 8 hours of sleep a night takes time, but it is an essential part of training. During crunch time for projects, between workouts and sleeping he is probably spotting many of his classmates 6 hours a day.
He told me that he could be getting better grades if not for the sport, and that he could be doing better at the sport if he cared less about his studies. But he is comfortable with the tradeoffs that he has made, and is confident that he has been spending his time in college well.