I've been looking for a story by her too. It was set S4/5, Dean is hiding out at Bobby's with Sam and Cas from the rest of the angels when Zachariah starts spewing his BS. It turns out that Dean was God the whole time but it was dormant because God wanted to live out life as a human. When Dean taps into the power he stays Dean with all his attitude & swagger but takes Cas to a cabin & gives him and upgrade. IDK if it was NC-17 slash but they did have a thing. Anyway if you find her or where her work is please let me know because I would love to read that one again.