Sleep

Before Erica can begin to truly think about what just happened, you say, "Erica, your body falls asleep for one hour after you become as horny as you can be and orgasm." Suddenly, Erica's eyes shut and she slumped onto the couch, and you watched as her boobs slowly swayed to rest.

You realize that you can't directly affect Erica's mind, and wonder what will happen to your friendship going forwards. Some amount of regret gnaws at you, but you think about it and realize that Erica couldn't hear you altering her so she may interpret this as a casual hookup or something deeper, but that she probably won't discern your involvement. Looking down at her sleeping peacefully, you wonder whether you should fix anything you've done, test out the amulet one her some more, head out, or something else.