Nope, not a good case. The blue-sky laws as I think they are called. Nebraska has a responsibility to protect their citizens and insist that people who make representations be licensed under their State Laws or Another State’s law in which they have reciprocity.
I used to be a real estate agent. We called this violating people’s first amendment rights by forcing them to be licensed and then applying rules (unable to say a house is near a church, for example).
All she is doing is listing what is available. She is exercising her right to free speech. She is not representing anything.