-- Call her a late bloomer.
Patton, 39, first announced her separation from Thicke in February 2014.
"We will always love each other and be best friends, however, we have mutually decided to separate at this time," Patton told People at the time.
Though the singer tried to win her back with public apologies and musical tributes, she filed for divorce last October.
"I mean, the honest truth is, it has been challenging. But it's been a year of growth, lots of healing, learning about all new things," she told "GMA."
"The truth is, you can't wallow in sadness or stay in bed when you have a child," she added. "And they're so full of life and wonder. And he brings me so much joy."