A friend, Craig Tevendale, said the young woman was upset and angry after the verbal attack, the local York Press newspaper reports.
Tevendale contacted the newspaper after his Swedish friend was subjected to a volley of abuse in the aftermath of Britain's vote last week to leave the EU.
"It is not only sad, but deplorable, that a criminal minority feel that they have been emboldened by the result to abuse others with brainless, racist bile which has no place in any civilised community,” the York Press quoted him as saying.
The Swedish Embassy in London had not heard of any other similar attacks directed at Swedes.
“We haven't received anything prior to this,” the Embassy's press spokesman Erik Sundberg told The Local.
“But it's still disturbing that these things are popping up,” he added, after reports of a spike in anti-immigrant hate crimes in the days following the vote.
He said a lot more people than usual had contacted the Swedish Embassy since the Leave side won last week's referendum by a four-point margin.
“The most popular question is: What is going to happen now? - which we can't answer. As of now, nothing will happen immediately, but people are still wondering if they will need work permits and visas.”
The Local has spoken to several Swedes in the UK who were shaken by the result.
Axel Lindman, a student at Durham University who will soon start working as a consultant in London, said:
“I can tell you one thing, the result has made me less keen to stay in England. The US, Germany, or even back home to Sweden looks more appealing than before.”