A couple of things...I would report her to the BBB (Better Business Bureau) and ripoffreport.org. You will do much better with letters to the lawmakers as it is then documented but before you send any letters you need to look up the laws in the state of Ohio. She might not be breaking any laws so there is nothing you can do.
If you check the laws maybe and she is doing something wrong then you can take her to small claims court...
You have to take the emotion out of all of this and plan a attack from many directions but unless she is breaking the law your phone calls will be wasted.
HEre is a website that will let you find the state laws,
Michigan State University College of Law and I would also check out to see if she is registered USDA and if yes, see if she is breaking any laws that way.