Solution

The tigers are ‘prancing’. In ‘sleek chivalric certainty’ they pace and ‘do not fear the men under the tree. So, they are the symbols of beauty, fierceness and strength. On the other side, Aunt Jennifer is terrified and weak. Her hands are finding it hard to pull the needle through the wool. The huge weight of her wedding band is heavy on her hands. Her terrified hands are still ringed by the ordeals of her married life. The intensity is heightened by the contrast.