"She's close to going over your head"

Can anyone explain this sentence to me?
Here's the sentence in its context: "Just cut her some slack. She's close to going over your head".

Thanks a lot.

"Cut her some slack" means give her a break, don't be so tough on her. "Go over someone's head" has two meanings that I know of: first, to say something the person isn't bright enough to understand; second, to bypass the person and appeal to a higher level of authority, as in complaining about an employee to that employee's supervisor.