This clip of a high school match between Leo and Canterbury comes from WANE in Fort Wayne, Indiana and it's one of the most unfortunate own goals you'll see.
The Canterbury goalkeeper knocks a cross that floats into the box straight up into the sky and when she tries to hit it a second time, she punches it directly into the face of one of her defenders to score on herself. Making it even worse is the fact that this happened in the first minute of play and was followed by another Leo goal five minutes later. Canterbury lost 2-0.
If they credited the defender for the own goal, that would just be cruel.