The road to her home is where they were searching. There is no other way to get to the house by car, but nobody had any business using that road anyway, as it only goes to her home and I think three other neighbor's homes. The objects were found just west of the road to her home, in the area that they were searching.......so, yes......LE did have a good reason for closing the road to her home. IMO
The route 225 turnoff goes to the well-know Foose's Creek Trail ( aka Colorado Trail) and Foose's Lake and Dam so there are lots of people who might be out using the main road #225 to go there on a lovely spring Mother's Day. The Morphew house is about 2000 feet from Foose's Lake. This might ring a bell.
One can also travel along Puma Path Road or a trail of it from the Monarch Spur RV Campground region. There is clearly a path that would be passable by foot, on bike, ATV and possibly by car. On the google map, you can see two tracks so it looks like it is accessible by vehicles with 4 wheels. I can't tell if there is a gate anywhere along it, but I doubt it. There are land parcels along that track, backing up to the South Arkansas River, that sold in 2019 so the path / road would have enough clearance to allow people to drive into the area to view the lots. The 8 acre lot east to their house sold last June for nearly $300K, so the dirt part of Pumas Path Road to the east would be the address for any new home there.
The parking area for access to Foose's Creek and Lake is not clear to me from google, and I can't do street view on route 225. There is parking along side Highway 50. It also looks like there is parking along the street closer to Highway 5o, and perhaps at a part of the trailhead that crosses a meadown north of the larger house just below the dam.
Knowing how popular that area is, it is very clear that people use Monarch Spur RV and campground to stay in that area to recreate along the route 225 and Colorado Trail. It would be very easy for someone to stay there appearing as a mountain biker or hiker and walk or bike past the Morphew house to surveille it frequently and no one would think anything was awry.
So, IMHO, there is another access to their home on Pumas Pass Road and it is big enough to access by vehicle, as well as ATV, bike, or on foot. Theoretically, one could view the Morphew home,, walk up to it, or could remove items or a person from it, exit east through Monarch Spur to Highway 50 and no one would see them.