The elders wife is a deluded woman who truly believes she is something special, in reality she is an arrogant, shallow woman who works in a supermarket.
The religion has a diminishing effect on it's worshippers and this can lead to them behaving in a way that is cold and unfeeling to another. The fact that her behaviour unsettled you is quite normal and it gives you an opportunity to plan how you will behave in future should a similar event happen again. By preparing in advance you will feel less caught off guard and more in control and the encounter will have less power to upset you.