Tributary, by Lisa T. Bergren Reviewed by: Lori Twichell Genre: YA Novella Publisher: Ebook Publication Date: June 2012 The world is at peace, for the most part, for Gabi and Marcello. After struggling through crisis after crisis, there’s been a time of rest for the two of them, giving everyone a chance to breathe a little and settle down into their lot in life. Gabi and Marcello are finally given some time together. Lia, who is still struggling with PTSD after all of the battles she fought and is trying to find her place in the past. Rodolfo Greco is trying to piece together the bits of his life after…