Nah, you wouldn't have to know the prayer or anything like that, just under Oral Component put yes or whatever.  And as far as I remember they buried that whole thing under a night sky in the show so that would be considered a time restraint.  When she was in front of enough people, that was when the spell took hold.  Thanks for showing me this again though Annie.  ;D  We will DEFINITELY be using that one lol.  Feel free to make some adjustments to it and post it up in the Spell Compendium if you want hun.