Money talk$, Coach.
But the cousin's not even a contributing member. In fact, she boasts about it, being a parasite.
My theory is this: I'm aware of the daily trials and tribulations of my fellow alum Skins, who has to constantly deal with the whining, complaining, bitching, crybabying, of the primitives. The primitives aren't exactly a great group of people to work with.
And so the cousin is Skins's revenge on the other primitives; he's getting back at them by allowing her to stay around.