[@Norschtalen]
Knowledge about the fastest, most direct route? Surely. About the stealthy option that's almost as fast? Less easy to do since people normally don't note down that kind of things, but with a plain INT roll we can figure out how well she makes one up from what she knows. Unfortunately knowledge about enemy patrols is limited since they don't seem to patrol per say, instead looting and rechecking houses without real set order to it. Unorganised plundering is hard to predict. At least she knows that's how they are acting.