Turn on audio and listen for heartbeats. The intensity of the heartbeats tell how near the monster is to finding Lacie. The heartbeats slowly calm down and go away when hiding in a bush, so wait a while in each bush. For dead ends, just return to the last bush, then go another route.
Also, there is always* another way.
*Not really true but sort of true. The devs can't literally make infinite routes.