Gentlemen, I think we are being a little unrealistic.
Of the scouts I have been around, they pretty much all talk about "velocity isn't everything" and "size isn't everything". Yet all these same guys' eyes light up when a tall kid hits 90 mph. And suddenly those moderating statements about velocity and size have dissipated with the breeze.
90 mph isn't necessary to be a successful pitcher. We all know that. But for a RHP it probably is close to necessary to get the opportunity to show he can be a successful pitcher in the pros.
And I'm not sure this mom is trying to be an assistant coach. Rather, she could just be trying to get information to feed her son, so that he can make a decision. There really isn't enough information to make a conclusion one way or the other. Can we give her the benefit of the doubt?
Well placed four seams can also be good pitches. What is wrong with the boy working on this?
He doesn't need to totally rely on either the two seam or the four seam.
JMHO