Career
During her career she represented her country at many international competitions, her best outings being the fourth place at the 2012 World Junior Championships and 2015 European U23 Championships. In addition, she reached the final at the 2014 European Championships where she, however, did not clear any height. On 30 July 2015 Grünberg suffered a serious spine injury during a training session in her native Innsbruck.
During a routine jump, she landed on her head and neck in the box in front of the mat fracturing her fifth cervical vertebrae which left her a paraplegic.
Her outdoor and indoor personal best is 4.45 metres set in 2014 and 2015 respectively. These are current national records.