Sherlock Holmes and the Nancy crisis

After Nancy left the mafia she runs the people in her team aren't happy about her choise with the new boss and are making a revolution that could destroy everything she built. The new boss visits Sherlock and needs his help to find Nancy since she is the only one who can stop this chaos. Will Sherlock be able to find Nancy and convince her to come back? (Read the other book I wrote before this so It makes more sense, You don't have too)