Agree with Coerver. That will get the most touches on the ball and help with footwork.
In Denver we’ve done SIQ Camps and that helps with positioning, possession. No idea if there’s something similar in DC area but maybe look at the description and see if you can find something among those lines.
https://siqacademy.com/wintertraining
And even if your DD doesn’t make a top team, if the clubs there are like ours, the increased practice time and coaches who aren’t volunteer parents will make a difference for the following year—we also see movement between fall and spring. Good luck!