Mom's Guide To Sex 15. After her mom's passing, JC is left in the hands of her stepdad Nicky, and his new girlfriend, Casca. In an attempt to make amends with her new housemate, Casca gives JC a lesson on how to use her best features to get what she wants.. Lilith and Alexander want to take their relationship to the next level with a butt plug, but stepmom Charley is concerned they're not ready. Lilith suggests Charley could teach them a thing or two..