Complex sentence: A story later developed that Rainey kidnapped Smith, forcing her join the Rabbit's Foot Minstrels, and teaching her to sing the blues; the story was was disputed by Smith's sister-in-law Maud Smith.
Split into simpler sentences: A story later developed that Rainey kidnapped Smith, making her join the Rabbit Foot Minstrels, and teaching her to sing the blues. This was disputed by Smith's sister-in-law Maud Smith.