There should be a bit over dozen people on the roof if no one has gotten off. There were sixteen guards in the beginning - two are dead and one is the rune mage outside, which leaves thirteen guards and Olan along with Beatrice (Beatrice is the raven).

Bleh... Roleplayerguild has been seriously acting up for me these past few days. Either it says the guild is temporarily down, loads only some of the page (and almost never the reply box), keeps loading indefinitely... Some other people have complained over similar problems, too, but it appears I am especially unlucky with the times I check here.