Now!
From the March '64 FBI interview report on Ms Arnold:
"
On November 22, 1963, at the time President Kennedy was shot, I was standing in front of the Texas School Book Depository Building. I was with Mr O. V. Campbell...; Mrs. L. C. (Bonnie) Richey...; Mrs. Barney (Betty) Dragoo...; Mrs Don (Virgie) Baker nee Rackley...; and Miss Judy Johnson... at the time President Kennedy was shot."I find it curious that, when we read the corresponding reports for the individuals here named, they all contain what her report does not:
clear statement as to location well away from the Depository front entrance:
1. Campbell:
"next to the curb on Elm street adjacent to the street signal light"2. Richey:
"in the roadway directly south of the Texas School Book Depository Building"3. Dragoo:
"just across the street in front of the building entrance"4. Rackley:
"on the edge of the pedestrian parade line at a point approximately thirty feet directly in front of the main entrance to the Depository Building"5. Johnson:
"the southwest corner of Elm and Houston Streets... on the sidewalk near the edge of Elm Street"But all we get for Ms Arnold:
"in front of the Texas School Book Depository building"...If she was indeed the woman seen by Mr Ronald Fischer walking back into the front entrance just before Pres. Kennedy passed by, then the individuals she names and who name her (Mr Campbell, Ms Richey, etc.) may plausibly have been so focused on the approaching motorcade that they simply did not notice her leave for the front steps.
And! It's just as possible people on those front steps were likewise so focused on the approaching motorcade that
they did not notice her returning to them. But---------Mr Bill Shelley did!
Shelley:
"I recall that Wesley Frazier, Mrs. Sarah Stanton and Mrs. Carolyn Arnold, all employees of the Texas School Book Depository, were also standing In this entrance way near me at the time Pres. Kennedy was shot" 
