Kaelen Ohm says what got her as a fearless young skier better and faster down mountains in small-town Canada now drives her climb onto everyone’s call sheets as a go-for-it actor, filmmaker and musician. “For some reason, I have branched out from everything I’ve known from my childhood, in following this path completely into the unknown,” Ohm tells The Hollywood Reporter about having gone from being a powder hound in Fernie, British Columbia as a child to her latest film, The Betrayers, world premiering at the Toronto Film Festival. That’s whether she’s executing a steep cliff drop as a skier, where “you have to trust and be really…