Yui died before the game was released, and in any case, her parents literally did not allow her to have fun.

In Eddan, she's probably played with some of her younger siblings and...well, she just lets them take over and pick whatever they want and she takes the leftovers. Usually she loses, but it keeps them happy while she's watching them. When she does win, she does get excited, but you can count on at least one little brat complaining that "sissy cheated!"