The constant memory is a normal reaction that can occur if anyone is hit by a disaster/earthquake. The brain can't process the memory properly, so the memory keeps coming up. You can think of it as if you eat something that is spoiled, and your stomach is indigestible, and it is stuck somewhere. Let me tell you one way to help. Imagine a place where you've enjoyed yourself, a place where you feel comfortable. And then you imagine a big, strong container, and then you put in it the memories of the disaster, or the thoughts that are related to it, and you imagine a tightly sealed image. This is a way to reprocess bad memories, which is called containment.