updated 04/12/2010 AT 11:00 AM ET
•originally published 04/12/2010 AT 12:20 PM ET
“Elin’s mother is having private treatments in the U.S., ” a source tells PEOPLE of Elin hopping a flight to pay her ailing mom a hospital visit. “Even though it is paid for in Sweden, her mother had private treatments here before and really liked where she was.”
Nordegren reportedly had a carry-on bag and a large black suitcase with her, but did not have her kids along – leaving them in the care of nannies, according to RadarOnline.
Nordegren, 30, earlier decided not to attend the Masters in Augusta, Ga., where her husband made his pro-golf comeback after his November car crash and subsequent sex scandal.