It’s a bleak rainy night, and the husband is very late getting home.  The wife has been reading a book all day about the ways people have died while visiting Yellowstone Park.  (Stupidity, nature.)  Naturally, she has wondered, since her husband is so late, whether he might have gotten in a horrific accident himself.  So that when he walks in the door, perfectly fine, and she is no longer a widow, she is slightly disappointed.