HB: I am SO sorry this happened to you. I can't imagine much worse she could have done to you.
But you have taken the high road. I'm surprised that they have already dropped the charges as these complaints usually stay on file for a long time. There must be more to the story that has satisified them that it is not true. Perhaps the timing and other things she has done.
I don't care for my ex but I would NEVER stop him from seeing his kids. That is extremely cruel.