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The beauty queen had a double degree in English literature and psychology from Sydney University and previously told Gold Coast Magazine she had a “deep and unmoving love for show jumping.” “My family aren’t quite sure where this passion came from, but I’ve been horse-riding since I was 3 years old and can’t imagine my life without it,” she shared in September. “I travel to rural Sydney two to three times a week to train and compete around New South Wales or broader Australia every other weekend.”
In the wake of her death, Australian photographer Chris Dwyer–who worked with Sienna on several occasions– took to social media to pay tribute to her. “You were one of the kindest souls in the world, you lit up the room and the world is a lot darker now that you are gone,” he wrote on his Instagram Stories alongside a photo of Sienna. “Hope wherever you are, you’re being the gremlin we all know and love. Miss you so much already.”