No, not really. You stick with the truth (that she lies) because you don’t want to compromise your own narrative.
If you make the charge that she’s crazy, all she has to do is to not appear crazy. Then it looks like both sides lie, so six one way, half a dozen the other.
Tell you what too. Making fun of crazy people is a bit of a taboo. My guess is the “short-circuit” is a means by which to neutralize her lying which has had an added bonus of making Trump look bad.
What they should have done (hopefully they still can) is to quietly dig up every bit of crazy they can on her (and video is worth a thousand words) and keep it for a counter-attack. At the same time they need to run a well documented ad on Clinton’s lies. Keep it simple and just double down on that.