I didn't doubt her but there was no sense in letting her know that."Two items still remain. I have a proposition for you. And your punishment."Her eye... went back down to the floor, "yes Miss." As I see it there are two alternatives. I contact the police and let them deal with a runaway slave (she looked up briefly with fear in her eyes at the mention of 'police') or ... I deal with this 'in house' so to speak."I paused to let that idea sink in. She looked up again and this time there was the. ..Hm.After I did a little moral tug of war in my head I soon decided to deal with these intrusive feelings and libido that night, and once my head was clear and my other head was limp and content, I'd make sure these thoughts never entered my mind again. I thought it was morally fucked but I needed to get out of this rut and this seemed the only way to do it. Yeah, as messed up as it was, I was gonna masturbate to my little sister that night.After I was pretty sure everyone in the house. I put two fingers into her tight hole. I finger fuck her pussy fast and hard, rubbing her clit with my other hand, my tongue teasing her nipple. This sends her over the edge again, and she has another orgasm. Now Lexy jumps right on me, and she is now looking down at me, with a sexy smile, and fire in her eyes. She moves down to kiss me, and now she is licking my neck. This is making me even wetter than I already am. Then she gives me chills when she whispers into my ear, licking it and. "Will you be here tomorrow? Same time?" Stupid question I know, and the answer, well I don't have to tell you that. They were renting a caravan, as we say, or a trailer, as you might say, for their fortnightly stay in the summer sun. A mere ten minutes by car up the coastal road. So, this is it. The very next day I'm the back seat of their auto, taking a look at the clouds that have rolled in overnight, saying, "Hey, this is indoor weather, get off that beach!" I forget who was driving, and who.