When V'Lar first arrives through the airlock, the door closes behind her. In the following shot when she shakes hands with Archer and Tucker, the door is open and the interior of the airlock is seen.
When the Mazarian ship first shoots at Enterprise, Archer leans on the helm console and it moves back and forth like it's not bolted to the floor.
When V'Lar mentions to the Captain and T'Pol "I would like to thank the crew member who gave up HER quarters" V'Lar had not yet met Hoshi and would not know whether the crew member was male or female. But maybe she could smell it, as T'Pol mentioned earlier the room still smelled like human.