SHE may not have set the Athabasca on fire. But Aashna Patel, a Bombay-born girl who migrated to Canada in 1974, has taken off on a turf few Indians have. An immensely popular television hostess in Canada, her debut album Aashna, has just been released simultaneously in Canada and India. While A-Ya, one of the tracks, is among the more distinct MTV videos in rotation today, Aashna's new venture implies a tough challenge. The reason: female pop sets forth one star each day, while the number of Whitney Houstons and Mariah Careys keeps on increasing with every passing year.