I'm sure the lady has a copy of her Union contract that both her and More must live up to.
The Roads Commissioner can reprimand the employee for just cause if he feel she is not abiding by the work rules provided that all employees are treated equally.
She also has a certain amount of protection via a grievance procedure that should resolve most differences through her Union Steward and Business Manager. Misrepresentation by Union Officials can get their DUCK IN THE SOUP TOO.
If repetitive reprimands for the same employee by a supervisor shows a pattern , up to and including harassment, an arbitrator can rule in the employees favor and cost the Namioki Township a lot more than a couple days mowing grass.
As far as her father hiring a Lawyer, that is not needed. The Illinois Department of Labor and her Local Union should do just fine.