I've admired her for her ability to bald faced lie at the drop of a hat and to spin a seemingly plausible argument out of thin air, She is a highly effective mouthpiece for a crisis. But she is like any other such tool-overuse builds up an immunity.
Trump apparently thrives on crises-he must, because so many of his are self induced. It was inevitable Conway would become ineffective, the real question is how effective she will be after a "vacation." Based on my personal reaction she is totally and permanently ineffective for Trump. I immediately change channels when I see her come on-I know she is not going to say anything of value or actually communicate any true facts unless it is totally by accident.
Then again, that's pretty much my reaction to Trump as well. He is a superb salesman totally wrapped up in a nonsensical and conflicting world of BS. Birds of a feather, I guess.