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In my not so lengthy experience in shooting girls BB, I've found that a team generally has one spark plug and only occasionally two. No team in the league I cover has more than 2 "go-getters." It's natural that they would get the most attention cause they are often at the action or causing it. Still, you have to discipline yourself to look to the off ball action, note those who have quick touches, and actually work on following specific players to get the "looking good."
Your 2 action shots are OK (I know, damned with faint praise but they are both just movement on the floor. Yes, the player's eyes in the second shot are intense but I (and your AF and probably most people) had to work past the zebra stripes to get to her expression. I do like the expression of the girl on the right in the first jube shot.
About all I can add to Russ' comment (who has much more experience than I do) is that you have to take lots of shots and throw most of them away. In a reasonably played girls game, I'll generally have ~400 frames of which maybe 10-15% even make it off the card. I don't burst shoot except in extreme situations like a break or going to the hoop. Don't know where you can shoot from, but being the local press I can work pretty much anywhere on the floor (out of play area) and in the stands. I make a point of putting myself at particular vantages and working them (say well up in the stands with a 135mm). Other quarters I'll stay on the baseline with a 50mm.
I obviously have a long way to go also, but that's what help I can offer after my first season as a "pro." Oh and there is this thing called anticipating the play." I keep trying, but you'd be amazed at how many perfectly focused shots of the rim I have with no one there cause nobody got off the floor to sweep for the rebound. More practice, I guess.