I understand that "throw hard accuracy will come".....is there anything that helps to speed that along?
Hmmm....I certainly don't understand that. Control comes from good mechanics and hard work.
SO;
Make sure your DD has good brush interference. Brush interference is absolutely required for good control. Brush interference is where the arm brushes the side of the body prior to release. If she has no brush interference, then she will always struggle with accuracy. We have a whole sticky devoted to brush interference.
For your DD to develop "control", you and her have to understand what control is.
So, here it is: Control is the ability of a pitcher to move the ball in 3 to 4 inch (the diameter of a softball is 3.8 inches) increments around the strike zone. Your DD has to learn how to move the ball up/down/left and right.
The "quadrant" drill is the basic drill.
Step 1: Divide the plate in half. Have her practice throwing to the left side of the plate, and the right side of the plate. The ball does not have to be over the plate or in the strike zone. The goal is for her to learn how to move the ball side to side. Then, do the same thing for up and down. Again, don't worry if the ball is a strike...just have her learn how to throw the ball up or down.
Step 2 Divide the plate into four quadrants. (Inside high, outside high, inside low, outside low.) Same thing as above. Have her work on placing the ball into each quadrant "on demand".
Step 3: Same as intermediate, except now she has to hit the glove. At this stage, you leave the glove in the same spot until she hits it.
These drills form a process for practicing and judging control. In college, my DD would start at Step 3. If she couldn't hit the mitt, she would go to step 2. If she couldn't do Step 2, she would go to Step 1.
The drill is really important for your DD. Your DD should use the drill when warming up to pitch in a game. It forces her to be mentally focused on doing something specific with the ball, rather than mindlessly throwing the ball under her arm is loose.
How long does this take? My DD did the quadrant drill from the time she was 13 until she graduated.
----------