Honestly, I could bluff my way through an invented scenario too:
I didn't know her that well, just a friendly acquaintance really. We'd see each other at Dewsbury train station most mornings, exchange little smiles, make small talk about the weather and delayed trains. But in those final weeks I could tell she was really opening up to me. I was probably the only person she could truly be herself around.
A week before she died she actually grabbed my arm, pressed herself against me and looked me right in the eyes. If I'd known what was coming I would've held on tighter and never let go.
I keep thinking back to all those little comments she made about how lost she felt, how her family didn't understand her, how she didn't belong anywhere... except with me. She'd send me random things on her phone sometimes - songs, memes, whatever. I didn't always reply straight away, you know how it is, but I always felt them.
Rest in peace, my extra special, almost-secret friend. The world lost a beautiful soul... but at least she had me for those quiet platform moments.