There's no telling what kind of relationship those two women have.
From the official website: "Keep an eye out for Alexa, who will guide you toward the Gym, where her younger sister, Viola, is the Gym Leader"
also: http://www.pokemonxy.com/_ui/img/_en/screenshots/june_p8_04.jpg --- Don't worry about it. I laugh automatically whenever I hold sharp objects. - Machi - Nagasarete Airantou http://youtu.be/iTJtTiQYlNU