When someone close to you loses a sister, take tips from this sample condolence letter.
Dear {Recipient},
A sister is more than just a sister; she is a confidante, an advisor and a best friend. Knowing that {Deceased} was all of those things to you and more, I can only express my most heartfelt condolences for your loss. I have never seen siblings closer than you were with {Deceased} and I hope that you see her influence in you the way that I do.
Nothing can ever replace a woman as special and loved as {Deceased}. I am always here for you during this time of mourning and loss.
Love,
{Sender}