No support. You might not be asking it to be just "given away", but allowing it to be obtained outside the original intended method would still kill any meaning that bow has. Attaching a cost to something doesn't mean lazy practices like this would be justified.
There's a big variety of bows in the game, so this can't be the only bow you adore, and you can always suggest
new
ones. Do that rather than attempting to ruin a part of the game's integrity.
P.S. I don't have this bow either, and I'd like the look of it as well, but that doesn't change the facts: we weren't at the party, so we don't deserve the rewards that were awarded for participating in that party. A simple concept, really.