For the most part, teen athletes are teen athletes. Female athletes in general tend to need more hip, knee, and ankle "prehab"-stuff. Could be as simple as barefoot warm-ups with single-leg exercises and not neglecting hamstring work.
Dan John's Southwood program is something he uses with his high school athletes. He's also written a ton in general about his methods and standards, so those are all worth checking out.
I'm also a big advocate of starting any younger lifter with bodyweight training like I wrote about here. Getting girls (and women) to do a handful of legit, good form push-ups (always on the toes, never on the knees) and chin-ups tends to be a good esteem booster, self-motivator, and a sign that "gym stuff" is really working.