After six weeks at a treatment facility for a health-related issue, Mary-Kate Olsen (search), the brunette half of the Olsen twins (search), is "doing well" and her fans can "expect her to return home soon," her publicist, Michael Pagnotta, said Tuesday.

The 18-year-old actress has been reported to be battling an eating disorder.

People magazine said Tuesday that Mary-Kate will be released this weekend, return home to her family and begin preparing for college in the fall.

Mary-Kate, and her blond twin sister, Ashley Olsen (search), turned 18 in June. They plan to attend New York University in the fall.

They've been acting together since they were 9 months old, most notably on the sitcom "Full House" and in a series of direct-to-video movies. They've also attached their names to a line of products ranging from clothing to beauty items to home decorating merchandise.

Their big-screen debut, "New York Minute," did poorly at the box office after its May release.