The family of a teenager allegedly gunned down by her boyfriend's father have broken their silence to express their heartbreak and pride.
Chelsea Ireland and Lukasz Kłosowski, both 19, were shot dead about 11.30pm on August 23 at a family gathering in Mount McIntyre, South Australia.
Lukasz's father Pawel 'Paul' Kłosowski, 46, was charged with two counts of murder - and had been estranged from his son since the boy was four.
Chelsea's parents Debra and Greg Ireland tearfully described how the engineering student and environmentalist wanted to change the world.
Chelsea Ireland (right) and Lukasz Kłosowski (left), both 19, were shot on August 23 after an argument at a family gathering in Mount McIntyre, South Australia
'We haven't just lost a daughter, we've lost a best friend and a sister,' Mr Ireland said on the front lawn of their Adelaide home.
'We've lost our baby girl and we miss her beyond what any words can describe. Our hearts will forever remain broken.'
Her cousin Savannah Ireland explained the devastating impact Chelsea's death had on the entire family.
'I don't have many tears left now. There was such a loss here for me and so many other people,' she said in an Instagram video.
Consoled by Chelsea's older sister Maddie, 22, Mr and Mrs Ireland said they were comforted to know the impact their daughter had on those she knew.
'It brings comfort to know Chelsea's kind and caring heart and bright smile has left a lasting impression on people she met,' Mr Ireland said.
'Chelsea was compassionate, strong, selfless and fearless and continues to make us proud every day.'
Chelsea Ireland's mother Debra (left), father Greg (middle), and sister Maddie (right) tearfully described the positive impact their daughter had left as beyond anything they could imagine
Chelsea's cousin Savannah Ireland tearfully explained the devastating impact Chelsea's death had on the entire family
Mrs Ireland spoke of her daughter's passion for the environment that led her to study mechanical engineering at Adelaide University.
'She was going to change the world with her recycling, reusing and saving the planet, and climate change. She had great plans,' she said.
'She had so many different sides to her — she was strong, fearless, passionate, determined, opinionated, but then she had such a beautiful, kind heart and gentle soul and really just saw the best in everybody.'
Mrs Ireland told of how when she was just 15 years old, Chelsea watched a YouTube video that inspired her to donate her waist-length brown locks to cancer patients.
The hair, along with a donation of $1,000, was given to the Royal Adelaide Hospital's wig recycling and loan service in 2015 and went on to be a wig for a cancer patient.
She went on to volunteer at Puddle Jumpers Incorporated, caring for vulnerable children and young people.
Lukasz (left) was with Chelsea (right) at her older sister Maddie's (centre) 21st birthday party a year ago