Why does Canal have to sit down at one of her own control consoles and type in order to get herself to do anything?
Maybe it is her version of a loading screen.
When Kane decided to use a suicide maneuver, Canal couldn't override his commands directly despite desperately wanting too, and instead tried to use her holographic body to force him away from the system. This makes no sense, unless the control-entered commands have a much higher override status than her willing her own circuits to fire does. This suggests that if she wants something to be done right, manually operating her own controls work better for her than simply willing her circuits to work.