Tim McGraw turned to social media on Saturday (Sept. 21) to wish his wife, Faith Hill, a happy birthday, saying that he and their daughters are “so very blessed” to have her in their lives. Hill turns 57 on Saturday, and her superstar husband posted on Instagram to mark the occasion, sharing a picture of Hill in character as Margaret Dutton on the Yellowstone prequel 1883, in which they starred together. “Happy birthday to this remarkable woman! My beautiful, strong, crazy, badass wife!!!!” McGraw writes. “I love my girl with everything that I am and could ever hope to be! She is our beacon, o…