I realized that I had to adjust my thinking. After praying to Jehovah about the matter, I bought the sister a small gift and wrote her a card to apologize for my bad attitude.
لٰكِنَّ كَثِيرِينَ يَتَصَرَّفُونَ بِعِدَائِيَّةٍ حِينَ يُهَدَّدُ مَرْكَزُهُمْ أَوْ تُهَانُ كَرَامَتُهُمْ .‏