You guys must be bored. As I [with some sarcasm] and Bobnh has said, throw some straw or paper or foam or dirt over the pipe. Build a nice little box to contain it all if need be. Hope for gophers and rats to tunnel in and add BTU's.
Thats absolutely all grandma needs or might afford. Thats exactly all that the neighbors did also. Pitless adapters are a unneeded complication in this climate.
Granma coud actually take this solution in her own hands if she read this forum, would not even need the friend.