The Lindt cafe was on lockdown, as was much of central Sydney, after an armed man held staff members and customers hostage for most of Monday.
"Suddenly there were police everywhere. I tried to go around the barriers. But everything was cordoned off. Then the police said that terrorists have taken hostages. Many people were curious and took pictures,” she added, although she said she had decided the area was too dangerous and decided to leave.
In the early hours of Tuesday morning, local time, police announced that the siege was over. Hostages fled as police stormed the cafe.
More than 8,000 Swedes live in Australia and the country is one of the most popular destinations for young Swedes keen to work or study abroad.