Fed 8.2.4: The batter-runner is out when she fails to advance to first base and enters the dugout/bench area after a ... base on balls...(continues)

Calling her out several minutes later would be the right call, but would also probably require the PU to wear a cup that would accommodate a basketball.

http://www.quickmeme.com/img/62/62f5...039bf538f8.jpg