Obedience
Your stepmom has been having a really stressful time lately so you suggest a relaxing meditation that you have made for her. She gratefully begins to listen to it, completely unaware that she is now starting her slut training with you. You have been working on this special frequency for months and you are excited you can finally put it to the test. Training her over a few days until she no longer requires the meditation. She now associates her relaxation with completely submitting to you. Doing everything you desire. You are busy one night fine tuning the frequency in order to make her do more things when your stepsister Isla grabs the earphone and begins to listen. It works almost instantly and she is completely under your control. You manage to get her spread eagle touching herself by the time your stepmom makes it home. She desperately needs your cock to relax so you deactivate Isla for later. However, the plot twist is that Isla swans in that evening, she remembers everything. She tells you she wont expose your secret if you fuck her right now. Ft Isla White as your stepsis.