<human>: So, she sits five feet from me.  

I was moved into a shared space with her about a week ago.  I knew from the get-go it was going to be hard... she is a complainer, hard for everyone on staff to deal with, and the like.  We have a very close-knit group otherwise.  

She likes to:  

-talk to herself out loud, approximately an hour a day combined  
-she clears her throat THREE TIMES A MINUTE.  ALL DAY.  ALL.  DAY.  
-she incessantly stops me to tell me about her lunch.  In detail.  Using phrases like 'just a really nice sandwich'.  I want to be editing video and doing social, not pretending to care.  

Before I paint the picture that I'm a monster, I am not.  This is NOT a kindly old woman.  This is the bingo hall type.  She recently was bragging about how she was going to make a man cheat on his wife.  She complains about everything (irony, I know, relax), and she, to customers and vendors, loves to talk about how everyone here 'treats her like a piece of shit and fuck them.'  Legitimately just not a good person.  

Yesterday, I was concentrating incredibly hard on a project, so I wasn't focusing all of my energy on not yelling at her.  She interrupted my for the fourth or fifth time saying it was 'unacceptable' to have my computer on the floor beside my desk.  I almost just told her to fuck herself.  So close.  I can't do that.

  
I know I sound like an entitled brat- but I have normal, although occasionally conflicting relationships with everyone here.  We all work through it like normal coworkers.  This woman is the anomaly.  I want to stop coming to work.  

Please reddit, tips.  Please.

Can you provide a brief rundown of the text in within 3 sentences?
<bot>: elderly coworker is both overwhelmingly irritating and a genuinely bad person.  I will snap soon and hurt my career.  What fucking do.