If you only knew how unimportant pitching time at 10u is to her development. I had the same thought process as you when my DD was in 10u. More worried about circle time and throwing strikes than I was mechanics. What a mistake.Thanks all for your advice. I guess my main concern right now is losing pitching time. She got a decent amount of time in the pitching circle in the fall due to a decent ability to get K's (have to give some credit to batters swinging when they shouldn't be), but with a new pitcher joining (honestly much better than DD) and the transition to new mechanics, I'm worried her pitching time will drop.
Don't let that aspect influence your decision making at all.