Probably sudden decompression would do lots of bad things to her body, like blow her lungs out her mouth, burst all her skin-surface blood vessels, pop her eyeballs, maybe boil her blood, and only freeze her after a nasty time of it. Yes, she would be in bad shape. And don't forget an exploding munition blasted open the ship's bridge before she was sucked into space, so, there's the heat and concussion from that too... But Force Magic, man. That's an easy one. It's the Force - it's strong with Leia. But it can't explain those dumb-ass, super-slow, ultra-short-range, zero-g as if there was g, bombers. Nothing explains that but complete disregard of even the least attention to sense.