As the parent of a young pitcher (13.5 yo), the attitude of the parents of your other "pitchers" is extremely frustrating. Being a pitcher, as you clearly understand, requires a lot of additional work and dedication (not to mention mental fortitude). You can't just show up to games and think it's going to happen. I've run into this mindset in Rec Ball and TB and the parents seem shocked when their kid walks the first three batters on 12 pitches.
At 12U, especially if you are second year 12U, it is not fair to the team to put girls out there who cannot at least throw strikes consistently. Even that is not really enough, but that is the bare minimum. The pitcher has to give your team a chance to win the game--or at least compete--and that is impossible if they are giving up multiple free passes an inning.
As suggested above, the answer is simple, but probably not easy as it will involve uncomfortable conversations. You will have enough work for three pitchers and I think having a fourth "pitcher" (really a position player who can come in and throw strikes in an emergency or to mop up) is not a bad idea. Definitely won't be enough work for 7 pitchers. If these parents want their daughters to pitch, they need to do the work and win the job from one of the top three. If not, they need to find a different team if they really want to pitch. My DD was in something of a similar situation in TB and I didn't need any coach to tell me what we needed to do. I saw it with my own eyes. We did the work, got better than most of what the team had, and earned our spot in the starting rotation of pitchers. I have some sympathy for the girls because they are only 11 or 12 and don't really understand it, but I have zero for the parents.
At 12U, especially if you are second year 12U, it is not fair to the team to put girls out there who cannot at least throw strikes consistently. Even that is not really enough, but that is the bare minimum. The pitcher has to give your team a chance to win the game--or at least compete--and that is impossible if they are giving up multiple free passes an inning.
As suggested above, the answer is simple, but probably not easy as it will involve uncomfortable conversations. You will have enough work for three pitchers and I think having a fourth "pitcher" (really a position player who can come in and throw strikes in an emergency or to mop up) is not a bad idea. Definitely won't be enough work for 7 pitchers. If these parents want their daughters to pitch, they need to do the work and win the job from one of the top three. If not, they need to find a different team if they really want to pitch. My DD was in something of a similar situation in TB and I didn't need any coach to tell me what we needed to do. I saw it with my own eyes. We did the work, got better than most of what the team had, and earned our spot in the starting rotation of pitchers. I have some sympathy for the girls because they are only 11 or 12 and don't really understand it, but I have zero for the parents.