She very well could because the national stage is a different game, even when someone proved their electabilty statewide like DeSantis. Still, I DeSantis' main issue is that he comes off as fake and not authetic, which isn't the case with Whitmer. It may also depend on what people she assembles around her in a presidential bid. Kamala for her part had the wrong people in her team and was unable to run the apparatus effectively.
Nonetheless, I definitely believe she has great potential and would be a far, far better choice than Harris for 2028. Whitmer/Moore or Whitmer/Warnock would the heck of a ticket.
DeSantis' main issue is Trump, who is basically an incumbent. Comparing to fakes like Haley, Vivek, DeSantis is a very authentic conservative. Without Trump, DeSantis wins easily.
Whitmer is facing a completely different situation. The field of 2028 is widely open. Harris is far from the dominating status of Trump. However, Whitmer is not as well known as DeSantis in GOP as well. She has the largest chance to win the general on paper, but how that translates to primary is unclear.