She has made getting it banned a huge issue herself in the past. Not doing anything to back up her rhetoric is what is making this is an issue with the NRSC.
The good news to gleem from this is that the NRSC is still apparently targeting her for defeat.
I would hope so.
She won last time with >50% of the vote. She's on the ballot with an unpopular governor. Her own approval number is below 50%.
Once the GOP gets past the primary, this race will tighten. DeVos can probably pull the Senate candidate accross the finish line.