My Sister's Mistress

Two months have passed since the Great Thaw, and Queen Elsa and Princess Anna are getting reacquainted after a lifetime apart. But one night will change all that, and the power dynamic within Anna's bedchambers. It is a dark, dark place to which they descend. Will the kingdom of Arendelle survive their unbridled lust and dangerous games? [WARNING: EXTREME KINK, ICEST.] :COMPLETE: