Jehen had momentarily lost herself in the sights of her magically-enhanced vision. The ability was, in truth, rather new to her, and using it took almost all of her concentration. Whether it was an honest desire to be thorough or simple curiousity about the others in her company, she had taken her time, sweeping the magical detection through a full circle of the area around her.
She returned her attention to the door, expecting to see the halfling working on what appeared to be some kind of puzzle lock. What she actually saw was the warforged, just stepping forward to slam its fist against one plate of the lock. With a muttered curse, Jehen scrambled frantically backwards, trying to get to the mouth of the alley and around the corner before the trap went off- she knew there just had to be some kind of trap attached to the device...