No.
If anything, she's more so liberal than her fellow compatriot Susan Collins, serving alongside her as part of Maine's current Senatorial delegation. No moderate of her calibre will ever be nominated by the Republican Party during their current climate. End of story.
The sad thing is she's not moderate at all. She joined all of the other Senate Republicans in whining about how Democrats should be bipartisan. "Bipartisan" seems to be code for Democrats should do whatever Republicans want them to do.