Yes

You dont say anything. She reaches with your hand towards your dick and comes closer. Her finger touches it and it feels like electricity shooting through your body. Shes so perfect. She could press the button any second, but somehow the risk excites you. She knows she has you. She asks: “Do you want me to take over from here? Do you want your sister to jerk your cock? Only if you are willing to take the risk that i make you cum of course ;)”.