Notice how no American feels alarmed by this or afraid by this. No American is walking up to her and saying "take this off this is America not the Middle East!" "Embrace our values or return to a Muslim country!"
As long as you respect America and don't be a terrorist or criminal you'll be respected and Muslim women are free to dress like this without judgement. They are even found in rural small towns in America and nobody cares.
Now trying putting this woman and her children in the Cotswolds or the Lake District and see the outraged reaction of racist Brits.