If she says her business is going under due to these returns I'm gonna believe her over most people here. (She's different than an Amazon seller) If you have great ideas how she could flourish without these new policies then go contact her instead of tearing her apart anonymously online.
The narrative on all the news sites is that people are returning used items.
She repeated that despite the fact that it's against her return policy.
Do new returns hurt? Yes. Can they put her out if business? Possibly. Can used returns hurt? Not at all if she doesn't accept them.
She is partially if not fully responsible for the narrative.