A woman who just won the Emmy for drama writing for her work on “Mad Men,” has left the show and it isn’t completely clear why, reports Deadline Hollywood.

Kater Gordon started as creator Matt Weiner’s personal assistant and was eventually promoted to a full-time writer. The site quotes “a show insider” who says Gordon left because “Matt has reluctantly decided that their relationship has reached its full potential. She’ll be missed, but the series has consistently benefited from the influx of new writer talent, and there’s absolutely no doubt that Kater will continue to have unprecedented success in her career as she spreads her wings.”

–Elizabeth Jensen