I'm Sorry, Do I Know You..?

Part 3-Delia's P.O.V.

Well, this is it then: I'm going back to Poplar today. It's dreadfully exciting, but I'm extraordinarily nervous. What if I don't remember something? What if no one will talk to me? What if I do something wrong? WHAT IF I SEE THE GINGER GIRL?!?! No, stop it Delia, you're getting silly. You'll be fine. And there's pretty much no chance that I'll see the ginger girl-she might not even exist! Aghhhhh, I'm so ready for this!! Bring it on!
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As I walked through Poplar, past the docks, past the community centre, past that old convent, Nonnatus House (which made me very nostalgic for some reason, I've got no idea why though), memories began flooding back to me. I wander past a flat which makes my stomach flip inside me, but that might just be something I ate on the train, I guess. Finally, I reached the Nurses Home where they'd offered me my old room back. As I walked through the door into the room, something on the pillow caught my eye; a letter. That's funny, I thought. Who would have sent me a letter? It had the address written on it, so I knew it wasn't a card from someone else at the Nurses Home welcoming me back. I slowly tore open the neatly addressed envelope and pulled from it a funny little postcard with what appeared to be a 3D looking unicorn on it. I flipped the card over, and what I read made me gasp.
Deels, meet me at The Silver Buckle, 8pm on 22nd Oct. I love you. P x
I don't know who P is.