As a FORMER club and HS coach of girls for the past 8 or 9 years, I can tell you that my former club and in particular me as a coach have always tried to bring the strength and agility aspect of the game to the girls in their seasons through practice. Part of the problem is that with just 2 or perhaps 3 practices a week, there simply isn't enough time to do it ALL in practices. Some of this has to fall on the players. I would give workout handouts to them and strongly suggest they do them on certain days to help boost their muscular strength. Of course, when players are too busy doing other things to come to practice, then that only hurts their development as well.
As for the HS game, the coaches that are being implemented at this point and time don't always have the best knowledge when it comes to this type of training. I am happy to say that the percentage of serious injuries I have seen on my teams has gone below about 10% due solely to the efforts of this type of training and to the efforts of the players themselves. You get back what you put into it.
I have personally been through a torn ACL and I can tell you that coming back is hard work and I can also tell you that I thought I was in pretty good shape as well. The Trainers at most HS in this area are good at what they do, but remember that many of them spend 80% of their season working with Football players. So they may not be completely up to date on the latest when it comes to female athletes. There have been numerous studies of late about the high incidence of knee injuries in women. But when you look at it, the Men's US National Team has suffered about 10 of those in the past year and a half. So what's the answer? Look into some of the internet options that deal with these issues as they pertain to women...Some of them are very enlightening.
I understand what you are saying about the coaches needing to inform parents but realize that some of the coaches actually need to be informed as well. It wouldn't hurt for the clubs and schools themselves to invest something into their student athletes well being by sending the coaches to seminars or training on how to help reduce these types of injuries.
All that being said, sometimes you are just going to have those injuries happen. Sometimes they are just accidents and nothing more...In other words, no amount of training could have prevented it.
My statements here are meant only to let you know that there are coaches that care about this type of problem and we try to find ways of minimizing these injuries through our training. I hope you find the answers you seek and that your daughter enjoys many injury free seasons of the best game on earth.