The premise of the pilot which puts the girls in the spot to be kidnapped would require them to have avoided a 20-30 minute traffic delay by taking a "shortcut" which would extend their drive time by 5-10 hours, depending on how busy Yellowstone National Park was on that day. Nobody who knows the area would do that.
Also, the stretch of highway where they were taken (between Yellowstone and Bozeman) would be more likely to be covered by local sheriffs since it's a state highway and not one of the two Interstates which pass through the western half of the state. MHP could cover that area, but unless something has changed since I lived in the area, they don't have the resources to be covering that kind of road.
Also, if I'm remembering correctly, it seemed like the parents in Helena had been thinking about just "popping by" when the kidnapped girls reached Boseman? Those two towns are 100 miles or so apart, it's not like just jumping in the car and taking a quick 10 minutes across town to visit from one to the other.
This show lost me during the pilot just from the geographic insanity. Lots of people in entertainment spend time in MT, but it seems like none were involved with this project at any level.