Being a single mum of two under four can be stressful enough, but when you're profoundly deaf it's a whole new level. You communicate by lip-reading and signing, but when your little girl wakes you in the middle of the night blue-lipped and short of breath, what do you do?
You physically can't call an ambulance.
Luckily, Stevie Aiono's three-year-old Lina was one step ahead. She'd learned what to do at kindy.
Rachel Tiffen went to meet the clever toddler.
Watch the video - which has subtitles - to see her story.