Kearnen looks like she was trying to hide, but the sight of your approaching tank and its many sparking pursuers renders her obfuscation moot. She runs to meet it and jumps in, seemingly unafraid of who might be driving the tank. Upon seeing you, still unafraid, she says, "I was sent to tail the Defias goblin in there. We can't get him out for questioning at this speed, but I'll bet we're still within firing range."
If by "firing range" she means your tank's cannon radius, that is certainly more than enough to fry one puny goblin! He must die for stealing gnomekind's secrets! ...Unless the power would be better diverted to the engines.