I don't think Haley can beat Trump. She might be able to beat Biden, but Haley v Biden would be a choice between two globalists IMHO. I'd vote against Biden, whereas in Trump v Biden I'd be voting for Trump. Big difference.
Or did you mean what changes is she can beat Trump Biden, Biden Trump cannot. If so, I respectfully disagree. Barring massive election interference and vote fraud by the Dems, Trump stomps Biden in a landslide. That's part of why the "elites" are so scared of Trump hence all the lawfare against him.
I don’t think Haley can beat Trump as you suggest, I think Michelle can.