Isn't your cousin's sister also your cousin? What's the problem with going out for an evening with a cousin? Unless it is something you don't like doing....in which case, you say, nicely, that you really don't enjoy those activities, but that you'd like to spend some time together doing something else. She's your cousin. I love spending time with my cousins.
Afraid of what?
Afraid of, what? You afraid of her? Or that people will talk and think there is something more going on?
Okay, then you should stay away. If you fear you may do something inappropriate with her, don't go.
you can call her the "Dancing Queen" if ABBA's song ever plays or you could "Turn The Beat Around"
So why don't you want to call her your cousin?
cousin sister? Are you from West Virginia by any chance?
Wouldn't she be your cousin as well?
Just dont push the Outer Limits - you might be surprised at what you find there becaause you will have no control over it, in fact,
"There is nothing wrong with your television. Do not attempt to adjust the picture. We are now in control of the transmission. We control the horizontal and the vertical. We can deluge you with a thousands channels, or expand one single image to crystal clarity and beyond. We can shape your vision to anything our imagination can conceive. For the next hour, we will control all that you see and hear."