Your innocent step-sister is going to follow all of your instructions and guidelines precisely. She will do nothing else than what you tell her to and will be a really good girl..so she'll go ahead and strip quietly, not say a single word while giving you smiles and slowly taking her clothes off before she starts using feather to caress her body everywhere. She will then take the vibrator you hand her and use it a bit on her clit, then on her nipples...then turn it off and use the feathers some more. When you will ask her to use a butt plug, she will take the one you indicated from the drawer and slowly stretch her ass with it to make it ready for the first dildo and then the second really thick, huge dildo you will have her use on her ass. She will cum with the last one in her ass while using the vibe on her clitty once again ;) such an intense orgasm for an innocent girl like her, don't you think? :)