well, i remember an episode where april goes to an abandoned warehouse
and it turns out its being run by gangsters, she snoops around and eventually gets caught by them and interrogated(tickling of course).
anyhow, her grandmother/auntie(cant really remember) has come to visit her on a vacation and follows her to this warehouse to see wot she does for her job.
she kicks the crap out of the bad guys and saves the day for april.
i think thats how the story went, it was a long time ago since i saw the cartoon.