Money talks my dear. Especially in retail. If you are number one in sales, there's no arguing that you are doing a great job. Take satisfaction in a job well done and let the little biouch have her miserable life. Ignore her. I know it's difficult but clearly everyone know's SHE"S the problem and hopefully someone in management will wake up and can her sorry bum. Just keep thinking, this too shall pass. There's one in every bunch. Good luck!