The former star on "Dancing With the Stars" shared a video of herself in the shower while reading a book, and captioned that she was "in my little Ren den." The book in question is titled, "Turtles All the Way Down," written by John Green.
It's a young adult novel focusing on a main character with OCD, which Green has dealt with throughout his life. It's unclear if Ren chose the book for a specific reason, or she just used it to cover up for the shower shot.
Either way, good book promotion.