A wish was put in quite a bit ago, to give the GM staff the ability to respond to a petition to tell the person that created it, that the petition was being taken care of.
As of right now, the only way to do that, is if the GM looking into it sees that the person that created it is online at the time, they can send them a /tell .
Like everything else, this system will probably be expanded upon in the future as the game's development moves forward.