In this scenario, is she literally running on foot from the hazard, or is she able to evacuate by vehicle. If the latter, I would store the uncompressed bag next to your 'go" bag so that it could be compressed and taken if time and circumstances allow; if otherwise, the items suggested by others will allow her to get by.

I am not sure about your circumstances, but I personally would nto attempt to run from a tornado. I would find a root cellar, /enclosed space/ cave/whatever and hunker down. i would not care to be caught in the open