In my experience, many high school girls are stronger from the backhand side, so it is good to have them practice dictating points from that wing with some of the drills you were previously practicing. Boys typically want to hit from the forehand side.
Also, in comparison to boys, I also find that the girls can dictate points with sharp angles and accuracy instead pace. So, I would practice hitting a couple crosscourt to the corner of the baseline and then have them hit sharp crosscourt to the service box to open up the court.
Yep noticed that too. I'm sure there are some advantages to be played off of that,but I'm no coach.