Ajara Nchout scored the only goal for Valerenga but they suffered a 5-1 defeat to Lillestrom in Saturday's 2019 Norwegian Women's Cup final.
The Cameroon international had scored a hat-trick to fire Valerenga to a second Cup final in three years and vowed to lead her side to a first-ever silverware win but her hopes were dashed.
Lillestrom, who boasted a 4-1 triumph in their last meeting in the competition's quarter-final in 2018, took the lead through Elise Thorsnes with just 11 minutes into the contest.
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The holders kept their dominance on a high and extended their advantage through Emilie Nautnes' brace before Therese Asland struck the fourth on the brink of half-time.