I believe, as I'm sure most dads do, that my dd and several others have the ability to play A level ball. Unfortunately, some of our families are either not able or not willing to travel more than what we do now, which is limited to about 2 hours. A few are not willing to put the work in necessary to play at a high level.
No one likes to talk about it, but the quickest way for a team to get better is to "churn" the bottom 1/3 of the roster. While everyone loves a fairy tale about 12 girls who play 8U-18U together, that is not reality in high level TB. Find a core of @ 6 girls and build on that.