Spears, 25, took to Instagram to give fans a positive update on her eight-year-old girl's condition.
"So blessed to say that my daughter has fully recovered, and returned to all her normal activities.
"Which means I had to as well, today is my first day back to work. I want to thank everyone again for all their prayers... God truly blessed us with a miracle... Love y'all #Godisgood," Spears captioned a selfie of herself.
Maddie, whom Spears shares with ex Casey Aldridge, has been progressing toward a full recovery since February 5, when she was airlifted to the hospital in critical condition after the Polaris off-road vehicle she was driving, flipped over into a pond in her hometown of Kentwood, Louisiana.