The correct answer is:
It depends on whether or not Janice’s opponent was hindered.
From ITF Rule 26:
Although there is no penalty for Janice hitting her opponent with a racquet, if her opponent was hindered in playing the point by Janice’s unintentional act, then the opponent can ask to replay the point. If her opponent does not call a hindrance, then Janice’s team wins the point.
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