03/25/2014 at 05:00 PM EDT
After a rough 2013 that ended in
a months-long stay
in various psychiatric treatment centers, Amanda Bynes
is working on a fresh start.
After about three months of classes at the Fashion Institute of Design & Merchandising, Bynes, 26, "is doing extremely well," her mother, Lynn, tells PEOPLE exclusively. "She's making new friends and learning about the fashion industry."
On March 21, Bynes, her mother and her father, Rick, attended a
FIDM runway show event
that showcases the work of upperclassmen.
"She acts like any other student – focused and friendly," says a school source.
Estranged from her parents last year, the star is now often spotted
spending time with her family
Bynes will remain legally
under her mother's care
until at least September. "She's very happy to reestablish the loving relationship with her family she once shared," her mother's attorney Tamar Arminak told PEOPLE in December when Bynes was released.
Additional reporting by KEN LEE, MIA MCNIECE and GABRIELLE OLYAFor more on how Bynes is healing, pick up the new issue of PEOPLE, on newsstands now