As the lead cat in my Civic Band, I'll tell you that you're absolutely correct that your section leader could very well have no clue how the end of the row plays. When my two friends and I were trying to think of a fourth to make a flute quartet, I asked about a gal from the "other end." Both friends' eyes widened and they shook their heads very quickly. She apparently is not the best player and "fakes" when she can't play a part. I had no idea, since I don't hear her.
What's the point of your band? If it's to be as professional as possible, then techniques should be corrected. Rather like pied said. However, if it's to provide a Band outlet for non-professionals post-school (and a more relaxing experience for pros), then someone (including yourself, since you sound to be the "more experienced" player in that area) can just sort of casually say "I've noticed your technique is more aggressive than the rest of the section. You do realize we need to blend so we're a section rather than individual players." Something along those lines. If she's as new as you think, she could very well have no idea how to play as a part of an entire section.
Btb pied, your comment about herding cats is exactly how I describe our flute section. I figure as long as nobody out and complains about someone, and nobody stands out to my end, then the point of our Band is having fun while improving our skills. We don't get paid, we do this for love of playing. And having had a section leader when I first joined who felt the Power of Leadership (yes, in caps even), and seeing how all the ladies relaxed and had more fun once she quit, I'm going to continue to let the cats wander...as long as none wander off too far or too wildly.
And I'm not planning on moving around to play next to everyone--I have never had any section leader do that in any band I've ever played in. Never had a teacher suggest it. Can't imagine what "my" ladies (and newest token male
) would do if I did that. I'm afraid I'd freak them out and they'd feel judged and quit. Which is completely against the point of our Band. Although I do make it clear if anyone has troubles with any part, they're very welcome to ask for help. And I think they do--from the "more experienced" players closest to them. The cats do seem to do a pretty decent job herding themselves, most times.