Well, it's not appropriate. It can be considered vulgar and not in line with the standards of mainstream and family - friendly literature. Moreover, it may objectify characters in an improper way.
Katy Nichole in this statement is probably an individual who has a personal narrative that involves God. She could be a singer, a writer, or just an ordinary person sharing her experiences. Since the phrase mentions her name along with God being in her story, it gives the impression that she is the protagonist in a story that has a spiritual dimension.
Katy is a supporting character in Shang Chi comics. She's a friend and ally to Shang Chi, providing support and sometimes getting involved in his adventures.
Katy Keene is a fashion-forward character in the Archie Comics universe. She's known for her style and dreams of making it big in the fashion industry.