Katie had told John about the time she woke up on Daddy's lap to find him playing with her nipples. John got really excited at the thought of their father with his sister and together they came up with a plan so that John could watch from behind the curtain when Katie pretended to fall asleep again. This is the email Katie sent to her brother afterwards.
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Hi John,
I can't believe it actually worked! You'd told dad you had a headache and were going to bed, and mum had gone to bed early too. I had a bath, made sure my skin was soft and moisturised, smelling sweet and I'd dried my hair before putting on my little shortie pj's. The top's yellow, and I know it's a little bit on the tight side but that makes my nipples more obvious - and I've noticed before that Daddy likes that. The shorts are really short, when I bend over they ride up my backside and I suppose really I should just throw them away. They were perfect for our little plan though.
You were sitting on the windowsill behind the curtain, the bay window is perfect for what we wanted. Just knowing you were there made me wet. Knowing you'd be watching us, knowing that Dad wouldn't be able to resist. He was watching some boring documentary when I went into the living room, what the hell was that?! But I'd planned carefully and put on a DVD. Nothing overt, but I knew there were a couple of scenes that were a bit risque. I made sure to kneel on the floor in front of the tv while I was putting it into the machine, did you see me do that? I was on all fours, flashing my behind to him, pretending I'd no idea. That made me really wet.
I just sat next to him on the sofa at first, but I could feel him looking at me. Did you hear how husky his voice was when he asked if I was going to curl up on his knee to watch the film, like I used to? It made my nipples hard. I crawled over to him and sat on his knee, it's nice being his 'little girl' again, we don't get to do that much these days.