Board Thread:Episode Discussion/@comment-14138255-20170122163519/@comment-27082610-20170123021616

Or maybe she was the sole survivor of its last attack on a group of humans, but it let her go so it could follow her negative emotions to more humans. It would explain why something that looks like it should be as fast as that Grimm was taking its sweet-ass time murdering folks during the flashback: it's smart, and it knows what it needs to look for to find more prey. So it spreads fear like a deer hunter plants oats.