teaching my daughter_(0)

I was sitting in my living room watching porn as my daughter was asleep. I was starting to jack off when she walked in. I slipped my dick away but it was too late. She asked me what I was doing and I explained to her that this is what adults do when they are sad. Then she asked why I was sad and I said because mommy died. My wife had died a year before and we were living alone I still couldn’t get over the fact that my wife was gone. She said she couldn’t sleep so I told her she could stay up a little bit longer. So we started watching her favorite show. She asked if she could sit on my lap because she wanted to make me feel better. I have never thought of her in a sexual way but she was beautiful she had just gotten her period a year ago and she was turning into a curious young woman. I started to get a boner but she didn’t know what it meant at least as far as I know. Then she asked me what she could do to make me feel better and I said she was doing just that. Then she asked if her sitting on my lap made me feel better. I told her that it was time for her to go to bed.
We woke up the next morning after taking her to school I began watching TV and the school called telling me that she was showing kids her “tot” tot was what we called her vagina to make it more child appropriate.