The Government class mouse

One of the most annoying things in the world… squeaky pencils.  

In government class we have a girl who uses a mechanical pencils.  And one day I realized that her pencil was squeaky, the led squeaks on the paper as she is writing our abundance of notes.  I shrugged it off thinking it was an annoying happenstance of the day, it couldn’t be helped (well, I know how to fix it, maybe I should give her a tutorial on fixing the squeaky pencil led).  But the next class, the same problem.  And the next class.  And the next.  And it gets worse with each class.  Why can’t she learn to fix it!?  I have brought it up t her multiple times and she refuses to fix it.