https://theankler.com/p/lose-the-romney-inside-ronna-mcdaniels
McDaniel led a secret and willful resistance (as did, with futility and not in secret, her uncle Mitt Romney). Trump wanted her to cancel the debates and she ignored him. Whatever Nikki Haley represented, whether meaningful resistance in the party or just a thorn in Trump’s side, was only possible because McDaniel, in spite of Trump’s ire, let the debates go on.
Then, as it became obvious that nothing would interrupt the Trump march, McDaniel herself seemed to go on administrative strike. The RNC’s fundraising efforts, one of its key functions, providing another money spigot for the general election, seemed to dry up. McDaniel blamed it on the constant call for money to pay Trump’s legal bills, leaving nothing left over. But, in truth, the RNC, under McDaniel — who had assembled a national committee of Trump foot-draggers — stopped working. Passive resistance. Finally, Trump fired her — though in typical Trump disorganization, this probably came too late with the fundraising hole too deep to make up.
McDaniel may have actually wounded him.