One easy way to add the name is to simply substitute it for 'she' or 'he' at a comfy early point. You can do this in narrative or in deep Third Person.
First paragraph:
-- They caught up to her in Braddy Square, in the rain. She'd been wary as a wild bird all the way across London. No flicker of movement pursued, no single footstep shadowed her own, but she knew someone was following. Justine had been a spy a long time.
You can wait till there's some dialog and have folks use the name.
About 150 words in:
--"Just so." He touched her cheek where he had hit her and turned her toward him. He did it gently. He had much practice in hurting women. "We continue. This time you will be more helpful."
"Please. I am trying."
"You will tell me where you have hidden the plans, Annique."
You can even have the character name herself:
Maybe 100 words in:
---It was a good day for robbery. Fog crawled up out of the Thames and made itself at home on Katherine Lane. It coiled over the drains and lurked in the corners, smelling like the river, which wasn't precisely ambrosia and mead as smells went. Anything could hide in that fog. Probably did.
"Welcome home, Jess," she whispered. She pulled her hood up and kept walking. The afternoon folded in around her, drizzling.
You don't want to be gimicky about it, generally. You want it to be invisible to the reader.