Police say Nickolas John Bullock is accused of robbery, while he and the girl are also charged with possession of stolen property in Tuesday's incident.
Bullock was wounded in the shooting, which happened when a Cranbrook RCMP officer tried to halt a vehicle believed to have been stolen earlier in the day.
Members of B.C.'s Independent Investigations Office are investigating the incident.
The office says the team sent to Cranbrook is returning to Vancouver after conducting three days of interviews and gathering evidence.
The information will now be reviewed and if it is determined an offence has occurred, the case will be referred to the Crown for possible charges.