According to This Star Won't Go Out (the organization founded in Esther's memory), Esther Grace Earl was a "spunky, energetic, creative kid, full of caring for her brothers, and a close companion to her sisters. Known for her blue eyes, dimpled smile, and fly-away blond hair, she loved monkey bars and climbing ropes, rescuing abandoned Saudi cats, skiing the Alps, impromptu photo shoots with her sisters, designing web pages, teaching herself to play the piano and making her family laugh with joy."
Esther was diagnosed with metastasized papillary thyroid cancer when she was 12 years old and fought valiantly until August 2010. She passed away just after her 16th birthday.
Source: Flickr user estherearl