Cheney has been doing America a real service by not going along with the Republican lie that Joe Biden stole the election from Donald Trump last year. However, we can't lose sight of the fact that her father, ex-Vice President Dick Cheney, had a hand in creating the conditions that allowed his (Trump's) presidency to happen in the first place.
By sidelining the "reasonable" voices in their ranks, the Republicans are alienating moderate voters whose votes they'll need if they want to regain congressional control (full or partial) in next year's midterm election. And at the rate they're going racing towards MAGA-world, that's unlikely to happen. Centrist voters understand what MAGA is now, and they want none of it.