You could always start with the end of flashback. Like the end result of what caused her to run or whatever, what leads her to the new village. Instead of a full "flashback" just have a "She remembers the heat of the flames, the way they pricked at the tiny hairs upon her face and seared her vision white with their heat." So on, whatever it is that happens. Then follow it with something like: "Just as she remembers the feel of it on her back as she ran, her breath tight in her chest and her head pounding with the assurance that she'd never be coming back, would never see them again; that there was nothing she could have done." Then get on with the story, her landing in place B or such.
I don't even know why I've randomly spilled all this out. I'm feeling great on this here day, even as it's coming to its close and I feel giving :D Birthday cake is awesome!
I think you should start off with a flashback, but not have it show the incident completely. Like have it as a dream almost, it could be a reoccurring nightmare for her. Then through out the story you can slowly reveal the incident to the readers. If that makes any sense.
I don't even know why I've randomly spilled all this out. I'm feeling great on this here day, even as it's coming to its close and I feel giving :D Birthday cake is awesome!