The reason why Charlie decided to save Rosalie was because he had seen right through the Schulz family’s intention to kill her. He was simply adhering to the basic principle where the ‘enemy of my enemy is a friend of mine’. This was why he had decided to save her.
As long as Rosalie was already estranged from the Schulz family, she could likely prove to be of big help to Charlie when he decided to seek revenge on the Schulz family in the future.
If he could keep Rosalie under control and turn