So much good here. If it were my student we’d work tirelessly to correct the “anchor” because I agree that’s a big problem as already stated by others. We’d work to bring the right knee with all the way through the back chain. At least that would be what I want her working with mentally. Being new to 43’ hints at her age, and this is common in my opinion at that age. (14 or so) Best thing for her now is to hit the weights and work on core strength and stamina. I can see her intent, but she’s not strong enough yet. She looks like she’ll get there if she focuses on her overall strength and agility. Tough to do as the pitching coach, but not impossible. Keep working the bottom half forward and keeping her stacked through the back chain and hopefully as she gets stronger it’ll translate to full pitch.