Co-worker abusing privilages?

leave it be. you have no authority over her. if her bosses are not happy with her, they will let her go. i have struggled with lazy do nothing co workers for a long time now. when i stepped up and called it out i was the trouble maker and things were actually harder on me as a result. if the managers do not care (they must not if this has gone on for a while), why should you? let it go.