You have been saying this for years and I have been telling DD to trust you. At 13 she couldn't break 52.. Then at 14 she was stuck at 55. Now she is touching 60 and cruzing at 58-59. DD is smallish at 5' 7" and 130lbs. I now am a beliver and think she can work at 63-64 when she is a senior in HS (3 years from now).
Thank you!
When it comes to gaining speed this is a thread that touches on some critical information.
https://www.discussfastpitch.com/softball-pitching/16837-four-points-resistance-pitching.html