She has no clue what type of life these tow lovers lead and she'll find out soon enough. She smirks at the look on Tess's face when he tells her that Jess will be goinf with them. It's a kodak moment. "  Just think of it as a fun weekend, Tess dear. We can shop and all sorts of stuff." Jess isn't naive but she is just playing along for now. Swhe isn't afraid of Tess's anger towards her, but, she finds it rather amusing as she flashes her sweet smile at Tess then at Edward. " We'll have so much fun the 3 of us." Smirk.