Complex sentence: After Bach's death in 1750, his sons came into conflict and moved on in separate directions, leaving Anna Magdalena alone with her two youngest daughters and her stepdaughter from Bach's first marriage.
Split into simpler sentences: After Bach's death in 1750, his sons came into conflict and moved on their separate ways. This left Anna Magdalena living alone with her two youngest daughters and her stepdaughter from her husband's first marriage.