This sounds just like my DD at 1st year 12U. Since I am on the other side of Ohio, I can't recommend a coach by you. I can give some thoughts about what I experienced with my DD switching sides of the plate.
One thing that I would stress is that being able to hit is still extremely important. A lot of people get caught up in the "novelty" of having a young slapper, but there are always going to be situations where she will need to sit back and drive the ball. If she can't hit the ball, then she isn't the "triple threat". Remember, the whole purpose is to move the defense around to create holes. Then you hit the holes. Drag bunt, slap (power and soft slap), sit back and drive. If a girl can do these, then she will be a nightmare for the opposing defense. I made sure that my DD could swing away and drive the ball from the left side before she became a "slapper".
Teach your DD how to read defenses. Every pitch, look where 3rd baseman is. Where is short? What did 1st and 2nd baseman do when you went through your footwork? I quiz my DD constantly on situations...3rd baseman crashed, SS in front of baseline cheating towards 3rd, out field normal depth, what do you do? And yes, this is all at 12U. Also, don't be surprised of the DD's coach just tells her to "do whatever" when she is up to bat. A lot of coaches played baseball then slow pitch, so they don't really understand what to do with slappers. All they know is that "slappers are supposed to be a good thing, and I got one"
As far as bats go, my DD uses the CF7 she got for Christmas a couple years ago. When it comes time for the next bigger bat, then we will look into the slapper bat. I would not buy the Slapper bat just because my DD now slaps the ball. I'm sure the advantage is minuscule.
When you have good slapper that is playing at the top of her game, it is a thing of beauty to watch. It is truly an art form to master. At 12U, most girls are still going up to the plate and just trying to hit the ball, hopefully driving it hard and fair. A slapper/bunter is dividing the field into quadrants and trying to place the ball. Its very difficult even for older girls, so at the younger ages it is exceedingly difficult. There will be times of frustration for sure, but stick with it. When she is a "triple threat" playing at the top of her game, she'll be the most valuable asset on the field. Good luck!