The creators page for tumblr can be found https://seraphinitegames.tumblr.com/ she also runs an instagram page.

I created this community because I am in love with the first book and the second comes out really soon. I couldn't find any communities for it yet on here so I figured I would take a leap and make one myself. 

Just a few basic rules of no harassing or bullying other people, remain respectful of other peoples works. Dont post anyone elses work on here as your own and ALWAYS get permission from someone to post their work here if they dont use pillowfort and you found it on tumblr.