The Arcane Archer power Phase Arrow allows you to "launch an arrow...at a target known to her within range, and the arrow travels to the target in a straight path, passing through any nonmagical barrier or wall in its way". Does this mean if target X, who has met the Arcane Archer at one time, goes into a tavern. 20 seconds later, the Arcane Archer stands outside the tavern and shoots the target, would it hit him even if the Arcane Archer has no clue where in the tavern the target is? Is "known to her" mean in a way you "know" your friends and people you've met? Or that you have an idea where he is in a 5'x5' square? in a 10x10 square or what? I'm very confused on this issue... any help would be handy.