Getting to like my step daughter part 3

Over the next two days my step daughter Sarah played me like a good one. Being home on rest days with my wife didn't allow me any time to stamp my authority on Sarah.
On a couple of occasions when my wife was in the kitchen or at least in a different room, Sarah came up to saying 'smell my fingers'. It was obvious her fingers had been inside her and the smell was wonderful.
One time she stood in front of me with her hand in her panties and then put her fingers in my mouth, saying 'does this taste nice'
But her best one of all was when her mother went to take a shower. I was lying on our sofa and Sarah straddled my head revealing she had nothing on under her bath robe and then she used her fingers to spread her pussy lips really wide. She said 'you'll have to be quick'. I stuck my tongue into her and she was so wet. I licked her and sucked her clit and got a couple of fingers up her. I have to admit she tasted so good and when she came it was like a tap being turned on. However she didn't touch my cock and as soon as she was satisfied she said 'mum will be back in minute best leave it there'
Sarah just continued in this manner and apart from obviously enjoying herself she was showing her control over me. I was desperate to fuck her but she managed to keep one step ahead. She wanted me to suffer.
I was still thinking that there was one more day to go, before my wife went back to work, when her phone rang. It was her work manager asking if she could go in to cover some work due to sickness and offering good overtime. She agreed, got ready and was out the door in about 20 minutes.
I think I may have waited about ten seconds before bounding the stairs and into my step daughters bedroom. Sarah was dressed only in her bath robe and had her ear pods in listening to music. She pulled out one of the pods and said ' get the fuck out of my room'. I stayed put telling her I was in charge. Obviously she hadn't heard her mother leaving for work so she called for her mother and gave me one of her smug looks.
I grabbed some of her hair and an arm and dragged her to her feet. I spun her round, bent her over the bed and threw her robe up over her revealing my prize. I managed to release my cock that was so hard, lined it up with her cunt and buried it full length inside her in just one single thrust. I held myself fully embedded in my step daughter while I rubbed my thumb around her bum hole. She yelled at me that I wasn't special enough to play with her bum. I told her that she wasn't special enough to decide what I did to her. I then pulled out of her cunt and stuck my cock up her arse. I didn't lube any more than what her pussy had put on me and I didn't take it slow or let her adjust to it. I went full length and continued in a frenzied fuck. To be fair I felt a bit of discomfort at first so I wasn't surprised when she screamed in pain the whole time. She screamed all sorts of obscenities at me but I just ignored her and fucked her arse long, deep and hard. Nothing was about her and I was taking back control.
One last hard thrust and I held myself completely inside while emptying my balls into her guts. As soon as I was done I pulled out and walked away.