LOL…you know what would be funny? If the close cousin that she gets to do the “splaining” to him…is a male…and the cousin who likes her assumes that he has competition.
Or…if she were to get a single female cousin (around the same age group as her) to explain to the ever persistent cousin…that Cutie is not interested…and he mistakes it for HER (the female cousin) being jealous/interested in him.