with @Katterhaus
@kouhai right, so this is about where things started to go down
i moved the one rook to h1 for an exchange, soon sent the other rook back to the back rank. i had a bit of a material advantage in the exchanges that followed, but black wasn't properly doomed until a little while later, when i offered my rook; bait taken, I moved the knight to put the king in check while opening up a discovered attack on her queen. at that point it was just specifics.