Rights groups are urging Qatar to drop a case against a Mexican World Cup employee who could be sentenced to jail and a flogging after she reported an assault and was then charged with unmarried sex.In a case that has raised fears for women attending the tournament later this year, Paola Schietekat, 28, was left with bruises on her arm, shoulder and back after a male acquaintance forced his way into her Doha apartment and attacked her in June.