She trained and directed company members such as Mark Meer, Josh Dean, Nathan Fillion, and Kevin Gillese.
Her directing credits include The Maltese Bodkin which featured Nathan Fillion (in one of his first theatrical roles) receiving an Elizabeth Sterling Haynes Award for Outstanding Fringe Production.
Stiles wrote her first Theatre For Young Audiences play, commissioned by the Provincial Museum, called If Whales Could Tell Tales.
There she trained Deborah Frances-White and Tom Salinsky founders of The Spontaneity Shop and authors of The Impro Handbook, which includes a dedication to her.
Stiles has performed improvisation all over the world and worked with Colin Mochrie, Brad Sherwood, Wayne Brady, Joe Flaherty, Josie Lawrence, Peder Falk, Helge Skoog, Pippa Evans, Ruth Bratt, Peter Spellos, Rebecca De Unamuno, Julia Zemiro, Edi Patterson, Ron Pederson, Dana Andersen, and Alan Cox.