I think this might backfire although probably not since the media will eat it up. Claiming Trump is some kind of secret neo- nazi just sounds too conspiratorial. Plus most Americans have no idea what the "alt right" is, if she indeed does use that terminology.
Trump made a YUGE mistake by catering to the Alex Jones/Breitbart/Roger Stone conspiracy nutjob crowd that also engages in white nationalism. As a conservative Republican, I DESPISE racial identity politics, both from the left and the right. This ugly strain needs to be eradicated. And it's scaring the living crap out of minorities who were open to voting GOP this year.