The funnier thing would be if they started stumbling into it without an idea of what's going on. They just learn through trial and error that doing certain things, perhaps even nonsensical ones from the perspective of someone who doesn't know Molly exists, turn off their hunger.
From Molly's perspective it just turns into weird coincidences. Like a movie she really wants to see suddenly getting a lot of high profile actors involved as the white court vamps involved in the entertainment industry realize they don't need to feed while it's their primary focus.
Or, after it's had a chance to spread, people she dislikes start having random vampire encounters at a rate best described as "taking a jog in the long grass".
Really unlikely, but it'd be pretty funny.