Charlotte Neve's mother Leila sang 'Rolling in the Deep' to her while she lay in a hospital bed in Leeds after suffering a brain haemorrhage in her sleep.
Doctors had told Leila to say her final goodbyes, but while singing the track Charlotte started to smile, and within two days she could speak again and get onto her feet.
"I climbed into her hospital bed to give her a cuddle - she was wired up to machines and unresponsive - and Adele came on the radio," Leila told the Daily Mail. "I started singing it to her because she loves her and we used to sing that song together.
"Charlotte started smiling and I couldn't believe it. It was the first time she had reacted to anything since the haemorrhage. The nurses were astounded and told me to keep singing, and she smiled again.
"The nurses said it was like I unlocked her and from that day she started getting better and better."
The incident in April has left Charlotte with memory loss and partial sight, but she has now been allowed to return back home full-time.
Her mother continued: "Music is a big part of her life - she loves music. She loves singing and dancing along to Adele, Katy Perry and Pink. So it shouldn't surprise me that Adele was the song that woke her up. She's a miracle marvel."
Watch the video for Adele's ' Rolling in the Deep' below: