I have experience here and will say that I would not recommend Bobby for girls newer to pitching that need work on basic mechanics like this girl needs. He is good with spins and using the fingers etc.... but I have seen several girls pitch just like this girl who have taken lessons from Bobby for over a year and it goes uncorrected. I would recommend him only for more advanced pitchers who already have good mechanics that need help on spin pitches. He has a lot of good advice in that arena, although I will warn, he does teach to wave bye-bye to the second baseman on a fastball which means the palm is facing down at 8 o'clock.I apologize, I didn't read all 4 pages of this so pardon me if it's been said already: the #1 cause for a lean forward is the front knee bending. Straighten that, the body will erect itself. STRAIGHT, not LOCKED. Nothing should be locked out. She may need verbal cues like, keep the chin behind the bellybutton at release.
For Houston, Bobby Smith is the man. Was a great pitcher in his youth (still pitches in the over 60 divisions) and Cat Osterman says he is the difference in what separated her from other pitchers.
Bill
If you pay close attention to what Cat says, she always says that he taught her how to spin the ball. She already had good mechanics when she did lessons with him.