Here is a sample location for that area. If your in-laws live on the SW side of the tracks, I don't see much hope. If they live on the NE side of the tracks as shown in the photo, there might be some hope.
A location on the NE side has a clear path to the transmitters, but there are signals reflected from the trains as they go by that interfere with the direct signals.
It might be possible that a very directional antenna with a shield on its left side could minimize the problem.
These would be extreme examples of that concept:
