Bull Durham is not based on actual events. It's a creation of the filmmakers' imagination, though it might draw inspiration from various aspects of baseball culture and experiences.
It can be considered as one long story arc. The characters and events in Durham County are interwoven and build upon each other throughout the series, creating a unified narrative.
I don't have enough information to determine exactly who Judith Kay is. She could be an ordinary woman who gets caught up in an extraordinary situation involving the mirror.
Judith was a remarkable figure. She was a widow, and she had the courage to take on the powerful Assyrian army. She used her wits and her faith to outmaneuver the enemy. She was known for her beauty which she also used to some extent in her plan to get close to Holofernes, the Assyrian general, and ultimately save her people.
The story of Judith is found in a specific book within the Bible's Apocrypha. Different religious traditions may have varying views on its inclusion, but for those where it's recognized, you'll find it as a distinct section known as the Book of Judith.