I agree that the word “heartless” is a much more powerful descriptor, not just for Hillary, but almost any Democrat. For a Democrat in power, being known as “crooked” is a resume enhancer.
Use Both! She is Heartless—the way she acted when Bill was caught with Monica showed she was more intterested in power than her marriage—She should have moved out of the White House then—Dump the SOB. This is what most women would do.