Another way to say somebody has survived a storm or been through a hard time in their life, is to say one weathers their problems. Weatherall can send the message that Granny has overcome all of her troubles, small or large, and of all sorts. One of these storms or disturbances could naturally be he jilting that she experienced. However she continued her life and finished, as she noted to herself, it rather well. This can be used to deem Granny's surname as appropriate.