Good point. Depending on where she worked, it is very possible that she could have walked from her job on the Plaza to the Katz Drugstore. :what:
I wonder if investigators and friends "assumed" she had taken the car, but she instead decided to walk up Main, and thus bought the umbrella as she thought it might rain on the way back?
If you do Google Maps for "Country Club Plaza, Broadway Street, Kansas City, MO" and zoom in once, you can see the route she may have taken up Main Street and into the edge of Westport there. The Katz was on the corner of Main and Westport Road. She probably would have headed East on 47th, past the large fountain and the church (my church, actually, hah) across the street, and taken Main North to Westport Road.