Having to deal with unwanted Co worker

So we all have that one Co worker that we wish just didn't work there. Or at least not anywhere near us. The lazy one who rather sit there and complain then actually do their job. Yes that's what I'm dealing with today. I got off the past few weeks with out having to deal. But she's back and now I'm just cou ting the time until I or her goes home. Is it really that hard to just do your job