At this point, I don't think it matters. If the park employee was mauled and killed by a raptor- though I think blood loss is was the main cause of Death- the Raptor probably wasn't looking to leave the victim here as a trap or a way to startle everyone else- and this close to the visitor's center means it's probably already inside.

They were smart in the movie- smart enough to camouflage themselves amongst the fake raptors in the museum part of the visitor's center.