One of my favorite scriptual verses is 1 John 4:19, which reads:
We love him, because he first loved us.
This could have been written about Sarah. People accept and love her, because she accepts and loves them. Her heart is open to anyone, and she tries hard to do good even to those who do not love her - since I am not aware of anyone who has met her in person and hates her.
I have watched her interact with people, and despite those times when impatience and emotional mood swings cause her to do and say things she regrets (especially to her younger sisters), I never have seen her act in a hateful way toward anyone. This is not strictly because it is totally natural for her; rather, it is a tendency on which she has focused conscious attention to strengthen. She actively tries to not be hateful, and it is inspiring to see.
I also have seen her consciously include in her life people whom others do not accept, and she does it without condemning those who do not accept. She is one of those people who can have friends from very different exclusive groups. She doesn't like everyone, but she strives to see and love everyone as a fellow child of God - and I am grateful for her example in my life.
I am proud of you, Sarah, and, while I am excited for you to leave home, start college and establish yourself as an independent adult, I will miss the daily lessons you teach me about courage, dedication, humility, sincerity, faithfulness and love.