When you are at Stephen and Claire's house, you are tasked with completing a couple chores. After doing the laundry and having Daniel clean the room, you can then interact with the model train set. There's a couple things you have to do here:
1) Set the right-most switch to "Go right"
2) Prep the coal to refill the train car
3) When the train passes under the coal loader and is refilled, change the right-most switch to "Go forward"
4) The train passes through the far tunnel and Sean mentions that it sounds like something was stuck in the tunnel.
to speed the train up and send it through the tunnel again.
6) Stop the train at the station and then check the front of it to collect the Beaver Creek sign.