She must have been passed clean out. Tractors and brush hogs/shredders are not exactly quiet.
Many years ago I worked for a company that did weatherization work on ghetto houses.
One place was an apartment over a storefront. We were to replace a six-foot window unit in the front bedroom.
The tenant was passed out cold on the bed the entire day. We even stood on the bed while we were working. I wonder if she ever wondered when the windows were replaced.