Factual error: Inga comes from Gettzemüllersteigen, Sweden. However the Swedish alphabet does not contain the letter ü. Also the combination of the letters in this name would never occur in the Swedish language, rather in German languages.
Continuity mistake: When the coach is grabbing Inga's buttocks, she is seen grabbing them with both hands but when the camera angle changes her right hand is at her side. Happens twice during the scene each time she grabs them.