2009 was a breakthrough year in the Senior sprint events for Louisa where she won a Bronze Medal at the 2009 Canoe Sprint European Championships in the K4 200m, 5th in the K4 500m at the same event. Another 5th at the 2009 ICF Canoe Sprint World Championships in Dartmouth, Canada confirmed the results were not a fluke. She finished the year with a Silver at the Under 23 Canoe Marathon World Championships in Gaia, Portugal.