"The last 10 months have been a battle at every turn," she wrote. "I dug deep to keep my faith and it was the love from so many of you that helped keep me going. From the bottom of my heart, thank you to everyone for your help."
Griner -- who also shared a photo of the moment she was reunited with her wife -- added that she's going to do everything in her power to help Paul Whelan and other detained Americans return home soon, too.
"Every family deserves to be whole," she said.
As we reported, Griner was released from Russia last week -- after the country agreed to a prisoner swap for arms dealer Viktor Bout. She had been detained since February.