updated 05/06/2010 AT 1:00 PM ET
•originally published 05/06/2010 AT 2:30 PM ET
According to sources in Sweden, Nordegren and her mother Barbro Holmberg together celebrated the Swedish holiday of Valborg, which on the last of April marks the arrival of spring with elaborate fires, singing and partying amid the beautiful landscape of mild weather.
“During the holiday, Elin was seen walking the streets of Gävle with her mom and children,” a source tells PEOPLE. “But she has had special protection by bodyguards 24/7.”