Thing is though, it doesn't say she went to Switzerland, but rather that she was there already:

"She frequently travelled around the country from her home in St. Gallen, in northeastern Switzerland, to protest vaccines and masks as a “demonstration tourist,” her daughter said."

Not suggesting it is true, but if she was there ahead of all of this, it could work...

Edit: So the mother, Dr. Ortrud Sonnabend-Memmert, was living there before. https://webcache.googleusercontent.com/search?q=cache:5cKg5EYAlXAJ:https://www.local.ch/en/d/st-gallen/9008/dr-med-sonnabend-ortrud-und-wolfgang-mQpvnoiBKGCjG0HVRVkLHw+&cd=8&hl=en&ct=clnk&gl=ca

Thing is though, it doesn't say she went to Switzerland, but rather that she was there already:

"She frequently travelled around the country from her home in St. Gallen, in northeastern Switzerland, to protest vaccines and masks as a “demonstration tourist,” her daughter said."

Not suggesting it is true, but if she was there ahead of all of this, it could work...