Williams' email requesting me to attach an academic writing

TheGreyKing
Sun, 23 Dec 2018 14:15:13 +0000

That probably is a positive sign. I would conclude that you are under serious enough consideration that they want to make sure that you are capable of the level of writing you would need to do for classes at Williams. I do not know why you are being singled out for this. As far as I know, most domestic applicants are not asked to send additional writing samples. Maybe you are an international applicant for whom English is a second language? Or maybe there is a inconsistency between your writing on different items they can see from your application. At any rate, they felt they needed to see more writing in order to be able to make a decision on your application. This means they still are considering your application.
Good luck!