...to encourage her to revise, she'll eat it.
She'll eat it slowly because there is an art to eating chocolate bars. She'll try to revise while holding the chocolate bar in one hand, but realize that she can't revise without proper music.
If you let an author look for proper music, she'll decide that her normal revising playlist simply isn't good enough, and she will use up a good half an hour trying to develop a new one before finding the perfect one on 8tracks.
If you give an author a perfect playlist, she'll sit at her desk and gush about how ABSOLUTELY PERFECT it is to anyone who will listen (IT IS ABSOLUTELY PERFECT). Eventually, she'll try to revise, but she'll drop her chocolate bar and leave an awful little smear on her manuscript. So she'll go to the bathroom closet in search of Clorox wipes, and find a spider instead.
If you let an author find a spider, she will scream. Loudly.
Once she settles down, she'll want to kill the spider. It'll jump and disappear off to some secret spider lair in her house to plan her later demise, and she'll scream a bit more before she remembers that she's supposed to be revising. But she'll realize that she clearly can't revise while holding a chocolate bar in one hand, so she'll open up an internet browser and look for a Halloween costume.
If you let an author loose on the internet to look for a Halloween costume, she will certainly find herself looking at books instead within five minutes, and eventually she'll go downstairs in search of her credit card.
If you give an author a credit card, she will buy ALL THE BOOKS.
If you let an author buy ALL THE BOOKS, she'll soon realize that she has blown way, WAY too much money in one night, and freak out. But she really wants the books...and that reminds her that she has her own book to finish revising.
But she still hasn't finished her chocolate bar.