 Why does Gerri kiss Lane?
Raging , Trooper Lane hovered three thousand feet above Tammany Square. The humming paragrav-paks embedded beneath his shoulder blades held him motionless above Newyork's three administrative towers. Two black paragrav-boats whirred along the translucent underside of Newyork's anti-missile force-shield, the Shell. Lane somersaulted. Cybrain had taken charge of his motor nerves. Lane dropped lightly to the floor, inside the room, in battle-crouch. Tammany Hall has warned that this man is extremely dangerous. Lane is an insane killer. Lane's mailed hand snapped open a pouch at his belt. The force-bomb "exploded"—swelled or inflated, really, but with the speed of a blast. It shaded the view from his window and re-entered the tower wall just below.
 She pities him.
 She pities him.  She is terrified he'll kill her if she doesn't.  She likes Lane.  He is trying to save her life.