That was the look, the look that only one who'd faced the Daleks like they had, like young Martha had. It was the look they all got. Momentary helplessness, despair, fear, worry, anger. All of it mixed up into one. And the mere mention of them was enough to inspire that look even in the Doctor.
"I know...I thought if all else failed, if you had to do what I asked, if it came to that then at least that would be it. And I know you, you'd have tried everything, tried every other way. But it seems even the mutual destruction of Gallifrey and Skaro wasn't enough to destroy them forever. Or they were destroyed and this...portal, this dimensional shift has pulled them through. Its complicated Doctor but suffice to say we are dealing with some number of Daleks. Don't suppose you have a weapon in here that..."
It showed how much Romana had changed from the happy little blonde thing wearing the face of Princess Astra and running through Paris hand in hand with the man in front of her that she was asking now about weapons.
"Of course you don't, but thats the plan so far, immobilise one enough to make a weapon that will penetrate their shielding"