Owen was born on 4 October 1993 in North Wales and lived in the Anglesey village of Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch (or Llanfairpwllgwyngyll for short) before moving to Australia with her family in November 1995.
Owen began her classical voice training at age nine, with singing teachers Naomi Hede and Norma Knight.
Owen's first solo performance on stage came just after her 10th birthday, in 2003, when she sang in a Riverdance Style show called "Shades of Green", organised by the Adelaide Irish Dancing Association, which toured South Australian theatres.
When she was 12, Owen gave her first major solo performance, singing a traditional Irish song at the Adelaide Festival Theatre to an audience of 2,500.
In 2008, Owen received media attention when asked to sing at the Adelaide Fringe Festival with French singer/harpist Cécile Corbel after they met on Myspace.
2012 – March, Owen was soprano soloist in Ennio Morricone's debut Australian concert in Elder Park for the Adelaide Festival of Arts.
23 June, Owen sang the Welsh National Anthem (Hen Wlad Fy Nhadau) at the Australia vs Wales Rugby Test Match at Allianz Stadium, Sydney.
2017 – February, French Magazine Le Figaro Culture ranked Owen as one of the top ambassadors of the six Celtic Nations.