Is it normal to a fetish to be dominated by younger women?

I turned 40 this year and I find myself lusting over my neighbor's 15 year old daughter. Actually she is turning 16 in a few days. Last night I had a dream when I saw the girl and she invited me inside her house when her parents were away for a few hours, she offered me a drink, and she took me down to her basement, and to my surprise the basement was a torture chamber. Then in my dream I passed out because she mixed something in the drink, and when I regain my consciousness she had me tied up and she threatened to slide a Samurai sword down my throat if I didn't listen to her. My hands and legs are cuffed but she tells me to get down on my knees and masturbate in front of her for her entertainment. I try doing it but I'm really nervous and scared so I can't get a hard on. Then she points a gun at my chest, when I flinch she reassures me that the gun has bullets that are not meant to kill but only injure. She says she will shoot me point blank in the chest with a non-lethal bullet and also stick a cattle prod up my ass. Finally I woke up from the nightmare in the middle of the night and felt so relieved it was only a dream. But later I realized that the dream turned me on and I kept wondering and fantasizing about my neighbor's hot daughter having a dungeon in her parents' basement and being a cruel and deadly dominatrix.