The way the TN visa works is you are supposed to go to the border with your papers, and get adjudicated there.

Unless you aren't allowed to re-apply after one denial (which I don't believe to be the case), it doesn't matter which border control point she went to for her return visit.

And unless the overton window has shifted into actual full fascism last week, being turned away at a border checkpoint is not grounds for a multi-week/month imprisonment.

But I suppose you can excuse any barbarity with 'well the victim was probably sketchy'.