Genevieve O'Reilly

I need to know who played the woman in white trousers, who i think was beckers wife. She was followed by the snowman in his car near the start, she was texting her daughter, she was late for becker. I recognised her but couldnt place her. Just checking the internet it came to me that it might be Genevieve O'Reilly (who played the CIA woman in Spooks tv series). She doesnt seem to be credited anywhere for being in the snowman, that characetr doesnt seem to be credited either. Does anyone know?