"I had talked to Mum the night before, the same way we did every night...but I had a feeling. I knew something was up and I kept asking her, 'are you ok?'"
Stone's second tragedy struck when her brother Carl was so deeply affected by their mother's death that he disappeared later that year.
Stone says she's spoken to him on the phone a handful of times and seen him once, but "he just looked lost, gone" and eventually Stone had to accept that may not want to be found.
"We were each other's world and now he's gone. It's like mourning a mother and a brother, only I know he is alive and I hope to God that one day he finds his way home."
Where to get help:
• Lifeline: 0800 543 354 (available 24/7)
• Suicide Crisis Helpline: 0508 828 865 (0508 TAUTOKO) (available 24/7)
• Youthline: 0800 376 633
• Kidsline: 0800 543 754 (available 24/7)
• Whatsup: 0800 942 8787 (1pm to 11pm)
• Depression helpline: 0800 111 757 (available 24/7)
• Rainbow Youth: (09) 376 4155
• Samaritans: 0800 726 666
• If it is an emergency and you feel like you or someone else is at risk, call 111.