Naw you guy's are going at it all wrong. Drag her ass into the middle of the council and drain her to her last drop of blood. At the last possible second stop. You leave her 1 drop of blood left and in doing so allows her to feel totally ingulfed in her thirdt but too weak to act upon it and then bury her in the nearest friendly neigborhood graveyard. (where she sits in torment for eternityNice idea, wouldn't work though as even in the Rebirth world, Vamps can "feel" when the sun is about to rise. So even without a physical clock they instinctually know when the big ball of fire is about to rise, so unless you could find some kind of way to suppress that instinct, they'd know.
Nice idea though. At best you could maybe lure them to a meeting outside the city in the middle of nowhere and then have someone else set up to say shoot the tyres out of their vehicle or something so that they wouldn't have anywhere to hide once the sun rose.