As an instructor I am probably too concerned with perfect form. There are a lot of ways to get it done. Of course there are a few absolutes, like IR, but outside of that things get fuzzy. I'm watching a Boston College game on tape and their pitcher, Abby Dunning, is only 5'4" and supposedly throws upper 60's touching 70. She lands well to the left of the power line and lurches to the right like many of the men do. They said she had made some changes since 2023 but they are subtle. Here is the best I can do for video.