Lusting After Forbidden Fruit

Our parents went away for the weekend, and my brat of a stepsister decided to spend our time together to tease the hell out of me! She treats me like I'm her butler, and on top of that she keeps undressing, doing naughty poses... This cannot continue! I have to do something about this! When she steals my phone, that is the last straw! I will have to do something about this naughty girl... something we both enjoy... a lot!