The actress, 18, finished her prescribed treatment at a facility and is back home in L.A., a source close to Lovato tells PEOPLE.
"She will continue to see doctors in L.A. who will help her work on the issues she confronted in treatment,” source says. "For now, she is getting back to her regular routine and spending time with her family and close friends. She is so grateful to all of her fans for their support, and looks forward to being able to talk to all of them very soon."
While her future professional plans remain unclear, "Demi will continue to focus first and foremost on her well-being."
Lovato checked into a treatment center for "emotional and physical issues" in late October after a fight with a dancer, Alex Welch, on the Jonas Brothers World Tour. What was described as a "short, physical altercation" was settled in time for Christmas, and Welch told PEOPLE she is "ready to move on."
In November, a source close to the family told PEOPLE that "Demi knows she needs the help and knows that she is where she needs to be right now."
Earlier this month, the singer took to her official Facebook page to express her gratitude to fans who stuck by her. "I want to make sure my fans know how thankful I am for all their love, support and prayers during this difficult time," Lovato wrote. "Thank you for standing beside me through it all."