[Bird Jenkins]

I believe the most likely theory so far was offered in the comments section of the original article.

Husband dies in accident in remote area, the intoxicated and possibly injured wife tries to round up some help. She doesn't happen upon anyone, collapses at the side of the road from the cold/injuries, and a snow plow comes along and unfortunately doesn't see her body, which is already probably covered with some snow. It plows even more snow over her body. She's buried in snow, I bet.

[AD from SpringBay]

She's buried in snow, I bet.

I'm in this neck of the woods. We have about two inches of snow on the ground with no big drifts along the side of the road. The news says the sheriff called off the search today. It's been about ten degrees for the last three days. The couple had three kids. It's a sad situation.