Playing on rails

What we need is some drills that focus on defensive work. The game Saturday was wild and hectic and just like everything that I do with the girls it showed me new things that we need to work on and reminded me that so-called "simple concepts" are really only simple because I'm 30...the girls need more time to internalize things before they become "habit". One of the major problems I'm seeing right now that we have our one superstar player who pretty much does all of our ball work AND all of our defense while the rest kinda trot along side whoever has the ball. Problem being the team is so reliant on her that if she isn't on the field absolutely nothing happens. Last Thursday in practice we started working on the concept of getting in front of the attacking players to block their line to the goal. Get in front of them, take the ball, all these things went out the window Saturday and we were back to chasing the attacking players down the field to the goal. Going to have to find a way to explain the concept of "heading them off at the pass" over just "following the ball". Just a side note....watching a superstar going up against another superstar is pretty exciting stuff!