Here’s the section rewrite – it explains why she helps him, something I’d failed to do before!

‘Hello beautiful.’ Blue murmured. A hazy face slipped in and out of focus, a lovely face with large copper coloured eyes, curved lips, peach-soft skin framed by chestnut hair falling forward as she bent over him.
‘You’re Blue Munro aren’t you?’ The apparition whispered in German. ‘I can tell by your eyes.’
‘Not when I’m looking at you,’ his cold blue eyes warmed as he slowly brought her into focus. He responded according to the code in the mission brief. If he ran into trouble SIS had an agent in camp, a nurse and she’d just identified herself.