Helle was born in Denmark but lived in the UK from 1991-2017. She studied music at the University of Nottingham and University of York, then worked as a keyboard teacher in primary schools for 3 years before taking a PGCE in Secondary Music at the University of Cambridge. Helle was Head of Music at Robert Smyth Academy in Leicestershire from 2002-2017 where she taught KS3, GCSE and A level Music. Here she also set up many extra-curricular groups, including the Robert Smyth Jazz Band, Robert Smyth Big Band and Soul Patrol, who have won many awards at the UK MFY and NCBF National Festivals and performed at the Schools' Proms at the Royal Albert Hall. These bands undertook 13 tours abroad and performed at the ISME World Conferences in Beijing 2010 and Thessaloniki 2012.

Helle received two teaching awards in 2012 and 2013 from The Lions Club and Market Harborough Council for her dedication to helping young people achieve.

On her return to Denmark in 2017, Helle joined Musik & Billedskolen, the local authority Music and Art Service in Varde, and was appointed Schools’ Coordinator and in 2021 Deputy Head of Service. Helle aims to make music accessible to all children and improve facilities with practice rooms and open spaces for students to access in their own time, an idea inspired from the UK.  Her work also focuses on how music schools and local authority schools can collaborate to raise standards of music education and ensure sustainable equal opportunity for all. Helle presented papers at the European Association of Music in Schools Conferences / ISME European Conferences in 2019 and 2021.