ANSWER 1: The theme in The Tiger's Whisker is Patience, Love and Overcoming Struggles. The husband had a great deep wound which was not going to fill in a few days. It needed continuous love from his wife and her patience which eventually did overcome all the struggles.
ANSWER 2: The author writes the story and tells the journey of the couple, how happy they were. He showed their immense love through his writings. When the husband went for war, his wife was worried about his return. But when he returned, he was a completely different man who would neither talk nor eat properly. Disturbed by this, the wife consulted a wise woman who advised her to bring six berries from a rare mountain and the whisker of the tiger who was very dangerous. The author showed how patience the wife could be while she attempts to get the whisker from the tiger. She went through some extreme dangers which showed love for her husband and finally showing the utmost patience she held to wait for her husband to recover from the wound.